展开 (ycos(x)+1)dx+sin(x)dy

解答

展开

(y cos (x) + 1) d x + sin (x) d y

y cos (x) d x + d x + sin (x) d y

求解步骤

(y cos (x) + 1) d x + sin (x) d y

乘开

d x (y cos (x) + 1) : y cos (x) d x + d x

= y cos (x) d x + d x + sin (x) d y

e x p an d \frac{( p ( 424 - p ) ^{2} )}{150}

e x p an d (3 x^{2} - 2 x + 1) l e f t (x^{3} + 2 x^{2})

s im pl i f y (- 3 + 3 i 3)^{5}

e x p an d \frac{4 π ( c - a ) ( b - c ) EF}{E ( b - c ) + F ( c - a )}

s im pl i f y 3 (x - 13) (x + 13) (x - 1)^{2}