化简 log_{2}(1/(2^2))

解答

化简

lo g_{2} (\frac{1}{2 ^{2}})

- 2

求解步骤

lo g_{2} (\frac{1}{2 ^{2}})

2^{2} = 4

= lo g_{2} (\frac{1}{4})

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

= lo g_{2} (2^{- 2})

使用对数计算法则:

lo g_{a} (a^{b}) = b

= - 2

s im pl i f y \frac{r s ^{5} t ^{3}}{r ^{4} s ^{4} t ^{- 2}}

f a c t or a^{3} (a - b + 1) - b^{2} (a - b + 1)

f a c t or 15 x^{2} + 22 x + 8

s im pl i f y (0.2 a + 8) (0.2 - 8)

s im pl i f y \frac{3}{5} \times 2