展开 1/(s(s-1)(s-2))

解答

展开

\frac{1}{s ( s - 1 ) ( s - 2 )}

\frac{1}{s ^{3} - 3 s ^{2} + 2 s}

求解步骤

\frac{1}{s ( s - 1 ) ( s - 2 )}

乘开

s (s - 1) (s - 2) : s^{3} - 3 s^{2} + 2 s

= \frac{1}{s ^{3} - 3 s ^{2} + 2 s}

e x p an d A (3, - 2) B (1, - 6)

e x p an d \frac{ab ( a + b ) + b c ( b + c ) + a c ( a + c )}{3 ab c}

e x p an d \frac{( 9 x ^{2} )}{( 5 x + 3 ) ^{4}}

e x p an d \frac{( x ( 7 x - 14 ) ^{(\frac{1}{4})} )}{( 1 - x ^{3} ) ^{3}}

e x p an d - 4 ln (a) - (- 4 ln (b) - 2 ln (c))