展开 ((e^{-7s}))/((s-3)(s-1))

解答

展开

\frac{( e ^{- 7 s} )}{( s - 3 ) ( s - 1 )}

\frac{e ^{- 7 s}}{s ^{2} - 4 s + 3}

求解步骤

\frac{e ^{- 7 s}}{( s - 3 ) ( s - 1 )}

乘开

(s - 3) (s - 1) : s^{2} - 4 s + 3

= \frac{e ^{- 7 s}}{s ^{2} - 4 s + 3}

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

\frac{d}{d t} ((x) (t + 1))

s im pl i f y (x - y + 1) (x + y - 1)

e x p an d \frac{( 4 p + 3 ) ( p + 10 )}{p ^{2}}

e x p an d (6 - x) ln (x + 5)