展开 (3x^2+2xy+y^3)dx+(x^2)

解答

展开

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

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

求解步骤

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

乘开

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

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

去除括号:

(a) = a

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

e x p an d \frac{( s - 2 ) ( 3 s + 1 ) ^{2}}{9}

e x p an d - \frac{4 s}{( s + 6 ) ( s + 2 )}

e x p an d \frac{4 x - 2 2 x - 2}{x ^{2} - 3 x + 2}

e x p an d \frac{( x - 4 ) ( x + 1 )}{( x + 3 ) ( x + 2 )}

e x p an d lo g_{10} (1 s)