展开 (4xy^2+3y)dy

解答

展开

(4 x y^{2} + 3 y) d y

4 x y^{2} d y + 3 y d y

求解步骤

(4 x y^{2} + 3 y) d y

使用分配律:

a (b + c) = ab + a c

a = d y, b = 4 x y^{2}, c = 3 y

= d y \cdot 4 x y^{2} + d y \cdot 3 y

= 4 x y^{2} d y + 3 y d y

e x p an d - 2 {h (t - 3)}

s im pl i f y e^{i (k x - wt)}

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

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

e x p an d \frac{1}{( n + 1 ) ln ( n + 1 )}