展开 (x-y)dx+y^2dy

解答

展开

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

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

求解步骤

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

乘开

d x (x - y) : x d x - y d x

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

e x p an d \frac{csc ( a ) ( tan ( a ) - sin ( a ) )}{1 - sec ( a )}

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

e x p an d (35 - 2) (4 + 7)

e x p an d 11 (10 + 7)

e x p an d \frac{1 + 5}{2}