展开-(10000s)/((s+400)(s+1000))

解答

展开

- \frac{10000 s}{( s + 400 ) ( s + 1000 )}

- \frac{10000 s}{s ^{2} + 1400 s + 400000}

求解步骤

- \frac{10000 s}{( s + 400 ) ( s + 1000 )}

乘开

(s + 400) (s + 1000) : s^{2} + 1400 s + 400000

= - \frac{10000 s}{s ^{2} + 1400 s + 400000}

e x p an d (4 + Δ x)^{2}

e x p an d 6^{\frac{1}{2}} (x^{2} + 1) x^{\frac{1}{2}} - 3 x^{3}

e x p an d 2 (x + h)^{2} + 3 (x + h) - 5 (x + h)

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

s im pl i f y (3 x^{2} + 1 - 3) (3 x^{2} - 1)