展开 k/((s(s+2)+k^2+k))

解答

展开

\frac{k}{( s ( s + 2 ) + k ^{2} + k )}

\frac{k}{s ^{2} + 2 s + k ^{2} + k}

求解步骤

\frac{k}{s ( s + 2 ) + k ^{2} + k}

乘开

s (s + 2) + k^{2} + k : s^{2} + 2 s + k^{2} + k

= \frac{k}{s ^{2} + 2 s + k ^{2} + k}

e x p an d lo g_{4} (\frac{b ^{3}}{b + 7})

e x p an d \frac{u ^{2} + 6 u + 9}{u}

e x p an d e^{2 (t - 2)} cos (w) (t - 2) H (t - 2)

e x p an d \frac{( ( 3 a ^{2} b ^{3} - 7 x ^{2} y ) ^{5} - 1 )}{3 a ^{2} b ^{3} - 7 x ^{2} y}

\frac{d}{d y} ((x) (2 y^{3} + x - π^{7} - 4 x^{3} + cos (3 + 2 y) - 5))