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受欢迎的三角函数 >

2cos^3(x)=cot^3(x)

解答

2 cos^{3} (x) = cot^{3} (x)

解答

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn, x = 0.91686 \dots + 2 πn, x = π - 0.91686 \dots + 2 πn

+1

度数

x = 9 0^{\circ} + 36 0^{\circ} n, x = 27 0^{\circ} + 36 0^{\circ} n, x = 52.53268 \dots^{\circ} + 36 0^{\circ} n, x = 127.46731 \dots^{\circ} + 36 0^{\circ} n

求解步骤

2 cos^{3} (x) = cot^{3} (x)

两边减去

cot^{3} (x)

2 cos^{3} (x) - cot^{3} (x) = 0

分解

2 cos^{3} (x) - cot^{3} (x) : (32 cos (x) - cot (x)) (cot^{2} (x) + 32 cot (x) cos (x) + 2^{\frac{2}{3}} cos^{2} (x))

2 cos^{3} (x) - cot^{3} (x)

将

2 cos^{3} (x) - cot^{3} (x)

改写为

(32 cos (x))^{3} - cot^{3} (x)

2 cos^{3} (x) - cot^{3} (x)

使用根式运算法则:

a = (a)^{2}

2 = (32)^{3}

= (32)^{3} cos^{3} (x) - cot^{3} (x)

使用指数法则:

a^{m} b^{m} = (ab)^{m}

(32)^{3} cos^{3} (x) = (32 cos (x))^{3}

= (32 cos (x))^{3} - cot^{3} (x)

= (32 cos (x))^{3} - cot^{3} (x)

使用立方差公式:

x^{3} - y^{3} = (x - y) (x^{2} + x y + y^{2})

(32 cos (x))^{3} - cot^{3} (x) = (32 cos (x) - cot (x)) ((32)^{2} cos^{2} (x) + 32 cot (x) cos (x) + cot^{2} (x))

= (32 cos (x) - cot (x)) (cot^{2} (x) + 32 cot (x) cos (x) + (32)^{2} cos^{2} (x))

整理后得

= (32 cos (x) - cot (x)) (cot^{2} (x) + 32 cot (x) cos (x) + 2^{\frac{2}{3}} cos^{2} (x))

(32 cos (x) - cot (x)) (cot^{2} (x) + 32 cot (x) cos (x) + 2^{\frac{2}{3}} cos^{2} (x)) = 0

分别求解每个部分

32 cos (x) - cot (x) = 0 or cot^{2} (x) + 32 cot (x) cos (x) + 2^{\frac{2}{3}} cos^{2} (x) = 0

32 cos (x) - cot (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn, x = arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn, x = π - arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn

32 cos (x) - cot (x) = 0

用 sin, cos 表示

- cot (x) + cos (x) 32

使用基本三角恒等式:

cot (x) = \frac{cos ( x )}{sin ( x )}

= - \frac{cos ( x )}{sin ( x )} + cos (x) 32

化简

- \frac{cos ( x )}{sin ( x )} + cos (x) 32 : \frac{- cos ( x ) + 3 2 cos ( x ) sin ( x )}{sin ( x )}

- \frac{cos ( x )}{sin ( x )} + cos (x) 32

将项转换为分式:

32 cos (x) = \frac{cos ( x ) 3 2 sin ( x )}{sin ( x )}

= - \frac{cos ( x )}{sin ( x )} + \frac{cos ( x ) 3 2 sin ( x )}{sin ( x )}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{- cos ( x ) + cos ( x ) 3 2 sin ( x )}{sin ( x )}

= \frac{- cos ( x ) + 3 2 cos ( x ) sin ( x )}{sin ( x )}

\frac{- cos ( x ) + cos ( x ) sin ( x ) 3 2}{sin ( x )} = 0

\frac{f ( x )}{g ( x )} = 0 \Rightarrow f (x) = 0

- cos (x) + cos (x) sin (x) 32 = 0

分解

- cos (x) + cos (x) sin (x) 32 : cos (x) (32 sin (x) - 1)

- cos (x) + cos (x) sin (x) 32

因式分解出通项

cos (x)

= cos (x) (- 1 + 32 sin (x))

cos (x) (32 sin (x) - 1) = 0

分别求解每个部分

cos (x) = 0 or 32 sin (x) - 1 = 0

cos (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

cos (x) = 0

cos (x) = 0

的通解

cos (x)

周期表（周期为

2 πn

）：

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

32 sin (x) - 1 = 0 : x = arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn, x = π - arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn

32 sin (x) - 1 = 0

将

1

到右边

32 sin (x) - 1 = 0

两边加上

1

32 sin (x) - 1 + 1 = 0 + 1

化简

32 sin (x) = 1

32 sin (x) = 1

两边除以

32

32 sin (x) = 1

两边除以

32

\frac{3 2 sin ( x )}{3 2} = \frac{1}{3 2}

化简

\frac{3 2 sin ( x )}{3 2} = \frac{1}{3 2}

化简

\frac{3 2 sin ( x )}{3 2} : sin (x)

\frac{3 2 sin ( x )}{3 2}

约分:

32

= sin (x)

化简

\frac{1}{3 2} : \frac{2 ^{\frac{2}{3}}}{2}

\frac{1}{3 2}

乘以共轭根式

\frac{2 ^{\frac{2}{3}}}{2 ^{\frac{2}{3}}}

= \frac{1 \cdot 2 ^{\frac{2}{3}}}{3 2 \cdot 2 ^{\frac{2}{3}}}

1 \cdot 2^{\frac{2}{3}} = 2^{\frac{2}{3}}

32 \cdot 2^{\frac{2}{3}} = 2

32 \cdot 2^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2^{\frac{2}{3}} 32 = 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{2}{3} + \frac{1}{3}}

= 2^{\frac{2}{3} + \frac{1}{3}}

化简

\frac{2}{3} + \frac{1}{3} : 1

\frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{2 + 1}{3}

数字相加:

2 + 1 = 3

= \frac{3}{3}

使用法则

\frac{a}{a} = 1

= 1

= 2^{1}

使用法则

a^{1} = a

= 2

= \frac{2 ^{\frac{2}{3}}}{2}

sin (x) = \frac{2 ^{\frac{2}{3}}}{2}

sin (x) = \frac{2 ^{\frac{2}{3}}}{2}

sin (x) = \frac{2 ^{\frac{2}{3}}}{2}

使用反三角函数性质

sin (x) = \frac{2 ^{\frac{2}{3}}}{2}

sin (x) = \frac{2 ^{\frac{2}{3}}}{2}

的通解

sin (x) = a \Rightarrow x = arcsin (a) + 2 πn, x = π - arcsin (a) + 2 πn

x = arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn, x = π - arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn

x = arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn, x = π - arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn

合并所有解

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn, x = arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn, x = π - arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn

cot^{2} (x) + 32 cot (x) cos (x) + 2^{\frac{2}{3}} cos^{2} (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

cot^{2} (x) + 32 cot (x) cos (x) + 2^{\frac{2}{3}} cos^{2} (x) = 0

用 sin, cos 表示

cot^{2} (x) + 2^{\frac{2}{3}} cos^{2} (x) + cos (x) cot (x) 32

使用基本三角恒等式:

cot (x) = \frac{cos ( x )}{sin ( x )}

= (\frac{cos ( x )}{sin ( x )})^{2} + 2^{\frac{2}{3}} cos^{2} (x) + cos (x) \frac{cos ( x )}{sin ( x )} 32

化简

(\frac{cos ( x )}{sin ( x )})^{2} + 2^{\frac{2}{3}} cos^{2} (x) + cos (x) \frac{cos ( x )}{sin ( x )} 32 : \frac{cos ^{2} ( x ) + 2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x ) + 3 2 cos ^{2} ( x ) sin ( x )}{sin ^{2} ( x )}

(\frac{cos ( x )}{sin ( x )})^{2} + 2^{\frac{2}{3}} cos^{2} (x) + cos (x) \frac{cos ( x )}{sin ( x )} 32

(\frac{cos ( x )}{sin ( x )})^{2} = \frac{cos ^{2} ( x )}{sin ^{2} ( x )}

(\frac{cos ( x )}{sin ( x )})^{2}

使用指数法则:

(\frac{a}{b})^{c} = \frac{a ^{c}}{b ^{c}}

= \frac{cos ^{2} ( x )}{sin ^{2} ( x )}

cos (x) \frac{cos ( x )}{sin ( x )} 32 = \frac{3 2 cos ^{2} ( x )}{sin ( x )}

cos (x) \frac{cos ( x )}{sin ( x )} 32

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{cos ( x ) cos ( x ) 3 2}{sin ( x )}

cos (x) cos (x) 32 = 32 cos^{2} (x)

cos (x) cos (x) 32

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

cos (x) cos (x) = cos^{1 + 1} (x)

= cos^{1 + 1} (x) 32

数字相加:

1 + 1 = 2

= cos^{2} (x) 32

= \frac{3 2 cos ^{2} ( x )}{sin ( x )}

= \frac{cos ^{2} ( x )}{sin ^{2} ( x )} + 2^{\frac{2}{3}} cos^{2} (x) + \frac{3 2 cos ^{2} ( x )}{sin ( x )}

将项转换为分式:

2^{\frac{2}{3}} cos^{2} (x) = \frac{2 ^{\frac{2}{3}} cos ^{2} ( x )}{1}

= \frac{cos ^{2} ( x )}{sin ^{2} ( x )} + \frac{2 ^{\frac{2}{3}} cos ^{2} ( x )}{1} + \frac{cos ^{2} ( x ) 3 2}{sin ( x )}

sin^{2} (x), 1, sin (x)

的最小公倍数:

sin^{2} (x)

sin^{2} (x), 1, sin (x)

最小公倍数 (LCM)

计算出由至少在以下一个因式表达式中出现的因子组成的表达式

= sin^{2} (x)

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

sin^{2} (x)

对于

\frac{2 ^{\frac{2}{3}} cos ^{2} ( x )}{1} :

将分母和分子乘以

sin^{2} (x)

\frac{2 ^{\frac{2}{3}} cos ^{2} ( x )}{1} = \frac{2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x )}{1 \cdot sin ^{2} ( x )} = \frac{2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x )}{sin ^{2} ( x )}

对于

\frac{cos ^{2} ( x ) 3 2}{sin ( x )} :

将分母和分子乘以

sin (x)

\frac{cos ^{2} ( x ) 3 2}{sin ( x )} = \frac{cos ^{2} ( x ) 3 2 sin ( x )}{sin ( x ) sin ( x )} = \frac{cos ^{2} ( x ) 3 2 sin ( x )}{sin ^{2} ( x )}

= \frac{cos ^{2} ( x )}{sin ^{2} ( x )} + \frac{2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x )}{sin ^{2} ( x )} + \frac{cos ^{2} ( x ) 3 2 sin ( x )}{sin ^{2} ( x )}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{cos ^{2} ( x ) + 2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x ) + cos ^{2} ( x ) 3 2 sin ( x )}{sin ^{2} ( x )}

= \frac{cos ^{2} ( x ) + 2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x ) + 3 2 cos ^{2} ( x ) sin ( x )}{sin ^{2} ( x )}

\frac{cos ^{2} ( x ) + 2 ^{\frac{2}{3}} cos ^{2} ( x ) sin ^{2} ( x ) + cos ^{2} ( x ) sin ( x ) 3 2}{sin ^{2} ( x )} = 0

\frac{f ( x )}{g ( x )} = 0 \Rightarrow f (x) = 0

cos^{2} (x) + 2^{\frac{2}{3}} cos^{2} (x) sin^{2} (x) + cos^{2} (x) sin (x) 32 = 0

分解

cos^{2} (x) + 2^{\frac{2}{3}} cos^{2} (x) sin^{2} (x) + cos^{2} (x) sin (x) 32 : cos^{2} (x) (2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x) + 1)

cos^{2} (x) + 2^{\frac{2}{3}} cos^{2} (x) sin^{2} (x) + cos^{2} (x) sin (x) 32

因式分解出通项

cos^{2} (x)

= cos^{2} (x) (1 + 2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x))

cos^{2} (x) (2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x) + 1) = 0

分别求解每个部分

cos^{2} (x) = 0 or 2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x) + 1 = 0

cos^{2} (x) = 0 : x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

cos^{2} (x) = 0

使用法则

x^{n} = 0 \Rightarrow x = 0

cos (x) = 0

cos (x) = 0

的通解

cos (x)

周期表（周期为

2 πn

）：

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x) + 1 = 0 :

无解

2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x) + 1 = 0

用替代法求解

2^{\frac{2}{3}} sin^{2} (x) + 32 sin (x) + 1 = 0

令

: sin (x) = u

2^{\frac{2}{3}} u^{2} + 32 u + 1 = 0

2^{\frac{2}{3}} u^{2} + 32 u + 1 = 0 : u = - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}, u = - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

2^{\frac{2}{3}} u^{2} + 32 u + 1 = 0

使用求根公式求解

2^{\frac{2}{3}} u^{2} + 32 u + 1 = 0

二次方程求根公式:

若

a = 2^{\frac{2}{3}}, b = 32, c = 1

u_{1, 2} = \frac{- 3 2 \pm ( 3 2 ) ^{2} - 4 \cdot 2 ^{\frac{2}{3}} \cdot 1}{2 \cdot 2 ^{\frac{2}{3}}}

u_{1, 2} = \frac{- 3 2 \pm ( 3 2 ) ^{2} - 4 \cdot 2 ^{\frac{2}{3}} \cdot 1}{2 \cdot 2 ^{\frac{2}{3}}}

化简

(32)^{2} - 4 \cdot 2^{\frac{2}{3}} \cdot 1 : 3 i 2^{\frac{2}{3}}

(32)^{2} - 4 \cdot 2^{\frac{2}{3}} \cdot 1

(32)^{2} = 2^{\frac{2}{3}}

(32)^{2}

使用根式运算法则:

n a = a^{\frac{1}{n}}

= (2^{\frac{1}{3}})^{2}

使用指数法则:

(a^{b})^{c} = a^{b c}

= 2^{\frac{1}{3} \cdot 2}

\frac{1}{3} \cdot 2 = \frac{2}{3}

\frac{1}{3} \cdot 2

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{3}

数字相乘:

1 \cdot 2 = 2

= \frac{2}{3}

= 2^{\frac{2}{3}}

4 \cdot 2^{\frac{2}{3}} \cdot 1 = 4 \cdot 2^{\frac{2}{3}}

4 \cdot 2^{\frac{2}{3}} \cdot 1

数字相乘:

4 \cdot 1 = 4

= 4 \cdot 2^{\frac{2}{3}}

= 2^{\frac{2}{3}} - 4 \cdot 2^{\frac{2}{3}}

同类项相加:

2^{\frac{2}{3}} - 4 \cdot 2^{\frac{2}{3}} = - 3 \cdot 2^{\frac{2}{3}}

= - 3 \cdot 2^{\frac{2}{3}}

使用根式运算法则:

- a = - 1 a

- 3 \cdot 2^{\frac{2}{3}} = - 1 3 \cdot 2^{\frac{2}{3}}

= - 1 3 \cdot 2^{\frac{2}{3}}

使用虚数运算法则:

- 1 = i

= i 3 \cdot 2^{\frac{2}{3}}

使用根式运算法则:

n ab = n a n b,

假定

a \geq 0, b \geq 0

3 \cdot 2^{\frac{2}{3}} = 3 2^{\frac{2}{3}}

= 3 i 2^{\frac{2}{3}}

u_{1, 2} = \frac{- 3 2 \pm 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

将解分隔开

u_{1} = \frac{- 3 2 + 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}, u_{2} = \frac{- 3 2 - 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

u = \frac{- 3 2 + 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}} : - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

\frac{- 3 2 + 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= \frac{( - 3 2 + 3 i 2 ^{\frac{2}{3}} ) 3 2}{2 \cdot 2 ^{\frac{2}{3}} 3 2}

化简

(- 32 + 3 i 2^{\frac{2}{3}}) 32 : - 2^{\frac{2}{3}} + 323 i 2^{\frac{2}{3}}

(- 32 + 3 i 2^{\frac{2}{3}}) 32

= 32 (- 32 + 3 i 2^{\frac{2}{3}})

使用分配律:

a (b + c) = ab + a c

a = 32, b = - 32, c = 3 i 2^{\frac{2}{3}}

= 32 (- 32) + 323 i 2^{\frac{2}{3}}

使用加减运算法则

+ (- a) = - a

= - 3232 + 323 i 2^{\frac{2}{3}}

3232 = 2^{\frac{2}{3}}

3232

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

3232 = 2^{\frac{1}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{1}{3} + \frac{1}{3}}

= 2^{\frac{1}{3} + \frac{1}{3}}

同类项相加:

\frac{1}{3} + \frac{1}{3} = 2 \cdot \frac{1}{3}

= 2^{2 \cdot \frac{1}{3}}

乘

2 \cdot \frac{1}{3} : \frac{2}{3}

2 \cdot \frac{1}{3}

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{3}

数字相乘:

1 \cdot 2 = 2

= \frac{2}{3}

= 2^{\frac{2}{3}}

= - 2^{\frac{2}{3}} + 323 i 2^{\frac{2}{3}}

2 \cdot 2^{\frac{2}{3}} 32 = 4

2 \cdot 2^{\frac{2}{3}} 32

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2 \cdot 2^{\frac{2}{3}} 32 = 2 \cdot 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{1 + \frac{2}{3} + \frac{1}{3}}

= 2^{1 + \frac{2}{3} + \frac{1}{3}}

化简

1 + \frac{2}{3} + \frac{1}{3} : 2

1 + \frac{2}{3} + \frac{1}{3}

将项转换为分式:

1 = \frac{1}{1}

= \frac{1}{1} + \frac{2}{3} + \frac{1}{3}

1, 3, 3

的最小公倍数:

3

1, 3, 3

最小公倍数 (LCM)

1

质因数分解

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

计算出由至少在以下一个数字中出现的因数组成的数字:

1, 3, 3

= 3

数字相乘:

3 = 3

= 3

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

3

对于

\frac{1}{1} :

将分母和分子乘以

3

\frac{1}{1} = \frac{1 \cdot 3}{1 \cdot 3} = \frac{3}{3}

= \frac{3}{3} + \frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + 2 + 1}{3}

数字相加:

3 + 2 + 1 = 6

= \frac{6}{3}

数字相除:

\frac{6}{3} = 2

= 2

= 2^{2}

2^{2} = 4

= 4

= \frac{- 2 ^{\frac{2}{3}} + 3 2 3 i 2 ^{\frac{2}{3}}}{4}

将

\frac{- 2 ^{\frac{2}{3}} + 3 2 3 i 2 ^{\frac{2}{3}}}{4}

改写成标准复数形式:

- \frac{2 ^{\frac{2}{3}}}{4} + \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

\frac{- 2 ^{\frac{2}{3}} + 3 2 3 i 2 ^{\frac{2}{3}}}{4}

使用分式法则:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{- 2 ^{\frac{2}{3}} + 3 2 3 i 2 ^{\frac{2}{3}}}{4} = - \frac{2 ^{\frac{2}{3}}}{4} + \frac{3 2 3 i 2 ^{\frac{2}{3}}}{4}

= - \frac{2 ^{\frac{2}{3}}}{4} + \frac{3 2 3 i 2 ^{\frac{2}{3}}}{4}

\frac{2 ^{\frac{2}{3}}}{4} = \frac{1}{2 3 2}

\frac{2 ^{\frac{2}{3}}}{4}

分解

4 : 2^{2}

因式分解

4 = 2^{2}

= \frac{2 ^{\frac{2}{3}}}{2 ^{2}}

消掉

\frac{2 ^{\frac{2}{3}}}{2 ^{2}} : \frac{1}{2 ^{\frac{4}{3}}}

\frac{2 ^{\frac{2}{3}}}{2 ^{2}}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{2}{3}}}{2 ^{2}} = \frac{1}{2 ^{2 - \frac{2}{3}}}

= \frac{1}{2 ^{2 - \frac{2}{3}}}

数字相减:

2 - \frac{2}{3} = \frac{4}{3}

= \frac{1}{2 ^{\frac{4}{3}}}

= \frac{1}{2 ^{\frac{4}{3}}}

2^{\frac{4}{3}} = 232

2^{\frac{4}{3}}

2^{\frac{4}{3}} = 2^{1 + \frac{1}{3}}

= 2^{1 + \frac{1}{3}}

使用指数法则:

x^{a + b} = x^{a} x^{b}

= 2^{1} \cdot 2^{\frac{1}{3}}

整理后得

= 232

= \frac{1}{2 3 2}

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{4} = \frac{3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{4}

分解

4 : 2^{2}

因式分解

4 = 2^{2}

= \frac{3 2 3 i 2 ^{\frac{2}{3}}}{2 ^{2}}

消掉

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{2 ^{2}} : \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{\frac{5}{3}}}

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{2 ^{2}}

使用根式运算法则:

n a = a^{\frac{1}{n}}

32 = 2^{\frac{1}{3}}

= \frac{2 ^{\frac{1}{3}} 3 i 2 ^{\frac{2}{3}}}{2 ^{2}}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{1}{3}}}{2 ^{2}} = \frac{1}{2 ^{2 - \frac{1}{3}}}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{2 - \frac{1}{3}}}

数字相减:

2 - \frac{1}{3} = \frac{5}{3}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{\frac{5}{3}}}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{\frac{5}{3}}}

2^{\frac{5}{3}} = 2 \cdot 2^{\frac{2}{3}}

2^{\frac{5}{3}}

2^{\frac{5}{3}} = 2^{1 + \frac{2}{3}}

= 2^{1 + \frac{2}{3}}

使用指数法则:

x^{a + b} = x^{a} x^{b}

= 2^{1} \cdot 2^{\frac{2}{3}}

整理后得

= 2 \cdot 2^{\frac{2}{3}}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

= - \frac{1}{2 3 2} + \frac{3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

\frac{3 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}} = \frac{3 3 2 2 ^{\frac{2}{3}}}{4}

\frac{3 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= \frac{3 2 ^{\frac{2}{3}} 3 2}{2 \cdot 2 ^{\frac{2}{3}} 3 2}

2 \cdot 2^{\frac{2}{3}} 32 = 4

2 \cdot 2^{\frac{2}{3}} 32

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2 \cdot 2^{\frac{2}{3}} 32 = 2 \cdot 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{1 + \frac{2}{3} + \frac{1}{3}}

= 2^{1 + \frac{2}{3} + \frac{1}{3}}

化简

1 + \frac{2}{3} + \frac{1}{3} : 2

1 + \frac{2}{3} + \frac{1}{3}

将项转换为分式:

1 = \frac{1}{1}

= \frac{1}{1} + \frac{2}{3} + \frac{1}{3}

1, 3, 3

的最小公倍数:

3

1, 3, 3

最小公倍数 (LCM)

1

质因数分解

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

计算出由至少在以下一个数字中出现的因数组成的数字:

1, 3, 3

= 3

数字相乘:

3 = 3

= 3

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

3

对于

\frac{1}{1} :

将分母和分子乘以

3

\frac{1}{1} = \frac{1 \cdot 3}{1 \cdot 3} = \frac{3}{3}

= \frac{3}{3} + \frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + 2 + 1}{3}

数字相加:

3 + 2 + 1 = 6

= \frac{6}{3}

数字相除:

\frac{6}{3} = 2

= 2

= 2^{2}

2^{2} = 4

= 4

= \frac{3 3 2 2 ^{\frac{2}{3}}}{4}

= - \frac{1}{2 3 2} + \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

- \frac{1}{2 3 2} = - \frac{2 ^{\frac{2}{3}}}{4}

- \frac{1}{2 3 2}

乘以共轭根式

\frac{2 ^{\frac{2}{3}}}{2 ^{\frac{2}{3}}}

= - \frac{1 \cdot 2 ^{\frac{2}{3}}}{2 3 2 \cdot 2 ^{\frac{2}{3}}}

1 \cdot 2^{\frac{2}{3}} = 2^{\frac{2}{3}}

232 \cdot 2^{\frac{2}{3}} = 4

232 \cdot 2^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2 \cdot 2^{\frac{2}{3}} 32 = 2 \cdot 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{1 + \frac{2}{3} + \frac{1}{3}}

= 2^{1 + \frac{2}{3} + \frac{1}{3}}

化简

1 + \frac{2}{3} + \frac{1}{3} : 2

1 + \frac{2}{3} + \frac{1}{3}

将项转换为分式:

1 = \frac{1}{1}

= \frac{1}{1} + \frac{2}{3} + \frac{1}{3}

1, 3, 3

的最小公倍数:

3

1, 3, 3

最小公倍数 (LCM)

1

质因数分解

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

计算出由至少在以下一个数字中出现的因数组成的数字:

1, 3, 3

= 3

数字相乘:

3 = 3

= 3

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

3

对于

\frac{1}{1} :

将分母和分子乘以

3

\frac{1}{1} = \frac{1 \cdot 3}{1 \cdot 3} = \frac{3}{3}

= \frac{3}{3} + \frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + 2 + 1}{3}

数字相加:

3 + 2 + 1 = 6

= \frac{6}{3}

数字相除:

\frac{6}{3} = 2

= 2

= 2^{2}

2^{2} = 4

= 4

= - \frac{2 ^{\frac{2}{3}}}{4}

= - \frac{2 ^{\frac{2}{3}}}{4} + \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

= - \frac{2 ^{\frac{2}{3}}}{4} + \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

u = \frac{- 3 2 - 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}} : - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

\frac{- 3 2 - 3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= \frac{( - 3 2 - 3 i 2 ^{\frac{2}{3}} ) 3 2}{2 \cdot 2 ^{\frac{2}{3}} 3 2}

化简

(- 32 - 3 i 2^{\frac{2}{3}}) 32 : - 2^{\frac{2}{3}} - 323 i 2^{\frac{2}{3}}

(- 32 - 3 i 2^{\frac{2}{3}}) 32

= 32 (- 32 - 3 i 2^{\frac{2}{3}})

使用分配律:

a (b - c) = ab - a c

a = 32, b = - 32, c = 3 i 2^{\frac{2}{3}}

= 32 (- 32) - 323 i 2^{\frac{2}{3}}

使用加减运算法则

+ (- a) = - a

= - 3232 - 323 i 2^{\frac{2}{3}}

3232 = 2^{\frac{2}{3}}

3232

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

3232 = 2^{\frac{1}{3}} \cdot 2^{\frac{1}{3}} = 2^{\frac{1}{3} + \frac{1}{3}}

= 2^{\frac{1}{3} + \frac{1}{3}}

同类项相加:

\frac{1}{3} + \frac{1}{3} = 2 \cdot \frac{1}{3}

= 2^{2 \cdot \frac{1}{3}}

乘

2 \cdot \frac{1}{3} : \frac{2}{3}

2 \cdot \frac{1}{3}

分式相乘:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{1 \cdot 2}{3}

数字相乘:

1 \cdot 2 = 2

= \frac{2}{3}

= 2^{\frac{2}{3}}

= - 2^{\frac{2}{3}} - 323 i 2^{\frac{2}{3}}

2 \cdot 2^{\frac{2}{3}} 32 = 4

2 \cdot 2^{\frac{2}{3}} 32

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2 \cdot 2^{\frac{2}{3}} 32 = 2 \cdot 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{1 + \frac{2}{3} + \frac{1}{3}}

= 2^{1 + \frac{2}{3} + \frac{1}{3}}

化简

1 + \frac{2}{3} + \frac{1}{3} : 2

1 + \frac{2}{3} + \frac{1}{3}

将项转换为分式:

1 = \frac{1}{1}

= \frac{1}{1} + \frac{2}{3} + \frac{1}{3}

1, 3, 3

的最小公倍数:

3

1, 3, 3

最小公倍数 (LCM)

1

质因数分解

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

计算出由至少在以下一个数字中出现的因数组成的数字:

1, 3, 3

= 3

数字相乘:

3 = 3

= 3

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

3

对于

\frac{1}{1} :

将分母和分子乘以

3

\frac{1}{1} = \frac{1 \cdot 3}{1 \cdot 3} = \frac{3}{3}

= \frac{3}{3} + \frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + 2 + 1}{3}

数字相加:

3 + 2 + 1 = 6

= \frac{6}{3}

数字相除:

\frac{6}{3} = 2

= 2

= 2^{2}

2^{2} = 4

= 4

= \frac{- 2 ^{\frac{2}{3}} - 3 2 3 i 2 ^{\frac{2}{3}}}{4}

将

\frac{- 2 ^{\frac{2}{3}} - 3 2 3 i 2 ^{\frac{2}{3}}}{4}

改写成标准复数形式:

- \frac{2 ^{\frac{2}{3}}}{4} - \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

\frac{- 2 ^{\frac{2}{3}} - 3 2 3 i 2 ^{\frac{2}{3}}}{4}

使用分式法则:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{- 2 ^{\frac{2}{3}} - 3 2 3 i 2 ^{\frac{2}{3}}}{4} = - \frac{2 ^{\frac{2}{3}}}{4} - \frac{3 2 3 i 2 ^{\frac{2}{3}}}{4}

= - \frac{2 ^{\frac{2}{3}}}{4} - \frac{3 2 3 i 2 ^{\frac{2}{3}}}{4}

\frac{2 ^{\frac{2}{3}}}{4} = \frac{1}{2 3 2}

\frac{2 ^{\frac{2}{3}}}{4}

分解

4 : 2^{2}

因式分解

4 = 2^{2}

= \frac{2 ^{\frac{2}{3}}}{2 ^{2}}

消掉

\frac{2 ^{\frac{2}{3}}}{2 ^{2}} : \frac{1}{2 ^{\frac{4}{3}}}

\frac{2 ^{\frac{2}{3}}}{2 ^{2}}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{2}{3}}}{2 ^{2}} = \frac{1}{2 ^{2 - \frac{2}{3}}}

= \frac{1}{2 ^{2 - \frac{2}{3}}}

数字相减:

2 - \frac{2}{3} = \frac{4}{3}

= \frac{1}{2 ^{\frac{4}{3}}}

= \frac{1}{2 ^{\frac{4}{3}}}

2^{\frac{4}{3}} = 232

2^{\frac{4}{3}}

2^{\frac{4}{3}} = 2^{1 + \frac{1}{3}}

= 2^{1 + \frac{1}{3}}

使用指数法则:

x^{a + b} = x^{a} x^{b}

= 2^{1} \cdot 2^{\frac{1}{3}}

整理后得

= 232

= \frac{1}{2 3 2}

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{4} = \frac{3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{4}

分解

4 : 2^{2}

因式分解

4 = 2^{2}

= \frac{3 2 3 i 2 ^{\frac{2}{3}}}{2 ^{2}}

消掉

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{2 ^{2}} : \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{\frac{5}{3}}}

\frac{3 2 3 i 2 ^{\frac{2}{3}}}{2 ^{2}}

使用根式运算法则:

n a = a^{\frac{1}{n}}

32 = 2^{\frac{1}{3}}

= \frac{2 ^{\frac{1}{3}} 3 i 2 ^{\frac{2}{3}}}{2 ^{2}}

使用指数法则:

\frac{x ^{a}}{x ^{b}} = \frac{1}{x ^{b - a}}

\frac{2 ^{\frac{1}{3}}}{2 ^{2}} = \frac{1}{2 ^{2 - \frac{1}{3}}}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{2 - \frac{1}{3}}}

数字相减:

2 - \frac{1}{3} = \frac{5}{3}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{\frac{5}{3}}}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 ^{\frac{5}{3}}}

2^{\frac{5}{3}} = 2 \cdot 2^{\frac{2}{3}}

2^{\frac{5}{3}}

2^{\frac{5}{3}} = 2^{1 + \frac{2}{3}}

= 2^{1 + \frac{2}{3}}

使用指数法则:

x^{a + b} = x^{a} x^{b}

= 2^{1} \cdot 2^{\frac{2}{3}}

整理后得

= 2 \cdot 2^{\frac{2}{3}}

= \frac{3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

= - \frac{1}{2 3 2} - \frac{3 i 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

- \frac{3 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}} = - \frac{3 3 2 2 ^{\frac{2}{3}}}{4}

- \frac{3 2 ^{\frac{2}{3}}}{2 \cdot 2 ^{\frac{2}{3}}}

乘以共轭根式

\frac{3 2}{3 2}

= - \frac{3 2 ^{\frac{2}{3}} 3 2}{2 \cdot 2 ^{\frac{2}{3}} 3 2}

2 \cdot 2^{\frac{2}{3}} 32 = 4

2 \cdot 2^{\frac{2}{3}} 32

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2 \cdot 2^{\frac{2}{3}} 32 = 2 \cdot 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{1 + \frac{2}{3} + \frac{1}{3}}

= 2^{1 + \frac{2}{3} + \frac{1}{3}}

化简

1 + \frac{2}{3} + \frac{1}{3} : 2

1 + \frac{2}{3} + \frac{1}{3}

将项转换为分式:

1 = \frac{1}{1}

= \frac{1}{1} + \frac{2}{3} + \frac{1}{3}

1, 3, 3

的最小公倍数:

3

1, 3, 3

最小公倍数 (LCM)

1

质因数分解

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

计算出由至少在以下一个数字中出现的因数组成的数字:

1, 3, 3

= 3

数字相乘:

3 = 3

= 3

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

3

对于

\frac{1}{1} :

将分母和分子乘以

3

\frac{1}{1} = \frac{1 \cdot 3}{1 \cdot 3} = \frac{3}{3}

= \frac{3}{3} + \frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + 2 + 1}{3}

数字相加:

3 + 2 + 1 = 6

= \frac{6}{3}

数字相除:

\frac{6}{3} = 2

= 2

= 2^{2}

2^{2} = 4

= 4

= - \frac{3 3 2 2 ^{\frac{2}{3}}}{4}

= - \frac{1}{2 3 2} - \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

- \frac{1}{2 3 2} = - \frac{2 ^{\frac{2}{3}}}{4}

- \frac{1}{2 3 2}

乘以共轭根式

\frac{2 ^{\frac{2}{3}}}{2 ^{\frac{2}{3}}}

= - \frac{1 \cdot 2 ^{\frac{2}{3}}}{2 3 2 \cdot 2 ^{\frac{2}{3}}}

1 \cdot 2^{\frac{2}{3}} = 2^{\frac{2}{3}}

232 \cdot 2^{\frac{2}{3}} = 4

232 \cdot 2^{\frac{2}{3}}

使用指数法则:

a^{b} \cdot a^{c} = a^{b + c}

2 \cdot 2^{\frac{2}{3}} 32 = 2 \cdot 2^{\frac{2}{3}} \cdot 2^{\frac{1}{3}} = 2^{1 + \frac{2}{3} + \frac{1}{3}}

= 2^{1 + \frac{2}{3} + \frac{1}{3}}

化简

1 + \frac{2}{3} + \frac{1}{3} : 2

1 + \frac{2}{3} + \frac{1}{3}

将项转换为分式:

1 = \frac{1}{1}

= \frac{1}{1} + \frac{2}{3} + \frac{1}{3}

1, 3, 3

的最小公倍数:

3

1, 3, 3

最小公倍数 (LCM)

1

质因数分解

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

3

质因数分解:

3

3

3

是质数，因此无法因数分解

= 3

计算出由至少在以下一个数字中出现的因数组成的数字:

1, 3, 3

= 3

数字相乘:

3 = 3

= 3

根据最小公倍数调整分式

将每个分子乘以其分母转变为最小公倍数所要乘以的同一数值

3

对于

\frac{1}{1} :

将分母和分子乘以

3

\frac{1}{1} = \frac{1 \cdot 3}{1 \cdot 3} = \frac{3}{3}

= \frac{3}{3} + \frac{2}{3} + \frac{1}{3}

因为分母相等，所以合并分式:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{3 + 2 + 1}{3}

数字相加:

3 + 2 + 1 = 6

= \frac{6}{3}

数字相除:

\frac{6}{3} = 2

= 2

= 2^{2}

2^{2} = 4

= 4

= - \frac{2 ^{\frac{2}{3}}}{4}

= - \frac{2 ^{\frac{2}{3}}}{4} - \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

= - \frac{2 ^{\frac{2}{3}}}{4} - \frac{3 3 2 2 ^{\frac{2}{3}}}{4} i

二次方程组的解是:

u = - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}, u = - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

u = sin (x)

代回

sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}, sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}, sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4} :

无解

sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} + i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

无解

sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4} :

无解

sin (x) = - \frac{2 ^{\frac{2}{3}}}{4} - i \frac{3 2 3 2 ^{\frac{2}{3}}}{4}

无解

合并所有解

无解

合并所有解

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

合并所有解

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn, x = arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn, x = π - arcsin (\frac{2 ^{\frac{2}{3}}}{2}) + 2 πn

以小数形式表示解

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn, x = 0.91686 \dots + 2 πn, x = π - 0.91686 \dots + 2 πn

作图

流行的例子

1/((sec^2(a)))+1/((cos^2(a)))=1

\frac{1}{( sec ^{2} ( a ) )} + \frac{1}{( cos ^{2} ( a ) )} = 1

(1-cos(a))(1+cos(a))=tan(a)sin(a)

(1 - cos (a)) (1 + cos (a)) = tan (a) sin (a)

tan^2(x)+1/6+(tan(1))/3 =0

tan^{2} (x) + \frac{1}{6} + \frac{tan ( 1 )}{3} = 0

-2cos^2(x)-5sin(x)+5=0

- 2 cos^{2} (x) - 5 sin (x) + 5 = 0

3-4sin^3(x)=sin^3(x)

3 - 4 sin^{3} (x) = sin^{3} (x)