展开 (90(s+0.3))/((s+3.8)(s-2.9)(s+10))

解答

展开

\frac{90 ( s + 0.3 )}{( s + 3.8 ) ( s - 2.9 ) ( s + 10 )}

\frac{90 s + 27}{s ^{3} + 10.9 s ^{2} - 2.02 s - 110.2}

求解步骤

\frac{90 ( s + 0.3 )}{( s + 3.8 ) ( s - 2.9 ) ( s + 10 )}

乘开

(s + 3.8) (s - 2.9) (s + 10) : s^{3} + 10.9 s^{2} - 2.02 s - 110.2

= \frac{90 ( s + 0.3 )}{s ^{3} + 10.9 s ^{2} - 2.02 s - 110.2}

乘开

90 (s + 0.3) : 90 s + 27

= \frac{90 s + 27}{s ^{3} + 10.9 s ^{2} - 2.02 s - 110.2}

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

e x p an d - \frac{4 ( 72 - 5 P ^{2} )}{3}

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

e x p an d (cos (x) - 1) (2 sin (x) + 1)

s im pl i f y (\frac{7}{x - 12} + 6 (100 - x)) (x - 12)