展开 (1-x^2)dx

解答

展开

(1 - x^{2}) d x

d x - x^{2} d x

求解步骤

(1 - x^{2}) d x

使用分配律:

a (b - c) = ab - a c

a = d x, b = 1, c = x^{2}

= d x \cdot 1 - d x x^{2}

= 1 \cdot d x - x^{2} d x

乘以:

1 \cdot d x = d x

= d x - x^{2} d x

s im pl i f y (i - 4)^{6}

e x p an d \frac{x ^{2} + 4}{( x - 3 ) ( x - 5 )}

e x p an d 5 (2 x + 4 - x + 10 = 3 x + 3)

e x p an d (x y^{2} + x) d y

e x p an d \frac{5 x ^{2} - 2 x + 12}{( x + 2 ) ( x - 1 ) ^{2}}