展开 (3/y-1)dy

解答

展开

(\frac{3}{y} - 1) d y

\frac{3 d y}{y} - d y

求解步骤

(\frac{3}{y} - 1) d y

使用分配律:

a (b - c) = ab - a c

a = d y, b = \frac{3}{y}, c = 1

= d y \frac{3}{y} - d y \cdot 1

= \frac{3}{y} d y - 1 \cdot d y

化简

\frac{3}{y} d y - 1 \cdot d y : \frac{3 d y}{y} - d y

= \frac{3 d y}{y} - d y

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

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

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

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

s im pl i f y 4 x (4 x^{3} - 3 4 x)