展开 (s^2+s+1)/(s^3(s+1))

解答

展开

\frac{s ^{2} + s + 1}{s ^{3} ( s + 1 )}

\frac{s ^{2} + s + 1}{s ^{4} + s ^{3}}

求解步骤

\frac{s ^{2} + s + 1}{s ^{3} ( s + 1 )}

乘开

s^{3} (s + 1) : s^{4} + s^{3}

= \frac{s ^{2} + s + 1}{s ^{4} + s ^{3}}

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

e x p an d - 4.16 z (z - 1) (z - e^{- T})

e x p an d 2 (5.5 - y - y = 2)

e x p an d \frac{10}{( s - 3 ) ^{3} \cdot ( s ^{2} + 1 ) \cdot ( s - 2 )}

e x p an d (1 - ln (x)) \cdot 2 x