展开 (1-x)sqrt(x)

解答

展开

(1 - x) x

x - x x

求解步骤

(1 - x) x

= x (1 - x)

使用分配律:

a (b - c) = ab - a c

x (1 - x) = x \cdot 1 - x x

= x \cdot 1 - x x

化简

x \cdot 1 - x x : x - x x

= x - x x

s im pl i f y (1 + x 6)^{2}

e x p an d (\frac{1}{2} - \frac{x}{3}) x^{2} e^{2 x}

e x p an d 6.9 (e^{- 0.24 t} - 0.24 e^{- 0.24 t} t)

s im pl i f y 2 (2 csc (2 x) + x (- csc^{2} (x) + sec^{2} (x)))

e x p an d \frac{d ^{3} y}{d ^{3} x} (x^{2} + x y + y^{3} = 1)