展开 (5x^2+2y)dx

解答

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(5 x^{2} + 2 y) d x

5 x^{2} d x + 2 y d x

求解步骤

(5 x^{2} + 2 y) d x

使用分配律:

a (b + c) = ab + a c

a = d x, b = 5 x^{2}, c = 2 y

= d x \cdot 5 x^{2} + d x \cdot 2 y

= 5 x^{2} d x + 2 y d x

e x p an d 3 (8 x + 5 y = 40)

s im pl i f y δ (x + y)

e x p an d \frac{x ^{6} - 1}{x - 1}

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

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