展开 dxd(x^6+3x^4+7x^2)

解答

展开

d x d (x^{6} + 3 x^{4} + 7 x^{2})

d x^{6} d x + 3 d x^{4} d x + 7 d x^{2} d x

求解步骤

d x d (x^{6} + 3 x^{4} + 7 x^{2})

= dd x (x^{6} + 3 x^{4} + 7 x^{2})

打开括号

= d x d x^{6} + d x d 3 x^{4} + d x d 7 x^{2}

= d x^{6} d x + 3 d x^{4} d x + 7 d x^{2} d x

e x p an d \frac{s}{( s ^{2} + n ^{2} ) ( s - 4 )}

e x p an d, \frac{3}{4} (v - 16)

s im pl i f y (2 x - 3 y) (4 x - 5 y)

s im pl i f y (22 - x)^{2}

e x p an d (y - \frac{1}{3})^{4}