展开 \sqrt[7]{x}(x-9)dx

解答

展开

7 x (x - 9) d x

x 7 x d x - 9 7 x d x

求解步骤

7 x (x - 9) d x

使用分配律:

a (b - c) = ab - a c

a = 7 x d x, b = x, c = 9

= 7 x d xx - 7 x d x \cdot 9

= x 7 x d x - 9 7 x d x

e x p an d (2 x e^{2 x} + e^{2 x} \cdot 2 x^{2})^{6}

e x p an d \frac{1}{2 ( 1 - cos ( x ) )}

e x p an d \frac{x + 1 + ( x + 1 ) e ^{- 2 x}}{x}

e x p an d \frac{- 50}{( s + 0.5 ) ( 0.2 s + 1 )}

e x p an d \frac{1}{x ( K - x )}