展开 1/(s^2(s^2-a))

解答

展开

\frac{1}{s ^{2} ( s ^{2} - a )}

\frac{1}{s ^{4} - a s ^{2}}

求解步骤

\frac{1}{s ^{2} ( s ^{2} - a )}

乘开

s^{2} (s^{2} - a) : s^{4} - a s^{2}

= \frac{1}{s ^{4} - a s ^{2}}

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