展开 dx(x^2+1)

解答

展开

d x (x^{2} + 1)

x^{2} d x + d x

求解步骤

d x (x^{2} + 1)

使用分配律:

a (b + c) = ab + a c

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

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

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

乘以:

1 \cdot d x = d x

= x^{2} d x + d x

e x p an d (1.5 m + 2, 3 n + 5 p) - (- 2, 3 m - 3, 2 p + 12 n)

e x p an d \frac{4 sin ( x ) ( x ^{2} + x + 2 )}{x + 2}

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

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

e x p an d (\frac{1}{2} x + \frac{3}{4} y = 30) \cdot (- \frac{4}{3})