展开 1/(s(2000-s))

解答

展开

\frac{1}{s ( 2000 - s )}

\frac{1}{2000 s - s ^{2}}

求解步骤

\frac{1}{s ( 2000 - s )}

乘开

s (2000 - s) : 2000 s - s^{2}

= \frac{1}{2000 s - s ^{2}}

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