limit as x approaches 20 of sin(70-x)

解答

x \to 20 lim (sin (70 - x))

sin (50)

十进制

- 0.26237 \dots

求解步骤

x \to 20 lim (sin (70 - x))

代入值

x = 20

= sin (70 - 20)

化简

= sin (50)

f (x) = (2 x^{4} - 1) (5 x^{3} + 6 x)

d er i v a t i v e \frac{( x ^{2} - 5 ) ^{3}}{x ^{2} + 2}

x \to 5 lim (ln (x^{2} - 25))

\int 5 e^{x} - cos (x) + 3 x^{2} - \frac{1}{x} d x

\int \frac{1}{x 36 x ^{2} - 4} d x