展开 (e^{-x})/(x(x-3)(x-2))+1/((x-3)(x-2))

解答

展开

\frac{e ^{- x}}{x ( x - 3 ) ( x - 2 )} + \frac{1}{( x - 3 ) ( x - 2 )}

\frac{e ^{- x}}{x ^{3} - 5 x ^{2} + 6 x} + \frac{1}{x ^{2} - 5 x + 6}

求解步骤

\frac{e ^{- x}}{x ( x - 3 ) ( x - 2 )} + \frac{1}{( x - 3 ) ( x - 2 )}

乘开

x (x - 3) (x - 2) : x^{3} - 5 x^{2} + 6 x

= \frac{e ^{- x}}{x ^{3} - 5 x ^{2} + 6 x} + \frac{1}{( x - 3 ) ( x - 2 )}

乘开

(x - 3) (x - 2) : x^{2} - 5 x + 6

= \frac{e ^{- x}}{x ^{3} - 5 x ^{2} + 6 x} + \frac{1}{x ^{2} - 5 x + 6}

e x p an d 4 xv d v + (3 v^{2} - 1) d x

e x p an d A (- 1, 1) y B (- 1, - 4)

e x p an d \frac{( 2 x ^{\frac{1}{2}} - 8 ) ^{3}}{3}

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

e x p an d C e^{2 x} + \frac{1}{4} (2 x^{2} + 2 x + 1)