化简 1+1/(s(s+2.2))

解答

化简

1 + \frac{1}{s ( s + 2.2 )}

\frac{s ^{2} + 2.2 s + 1}{s ( s + 2.2 )}

求解步骤

1 + \frac{1}{s ( s + 2.2 )}

使用分式法则:

1 + \frac{b}{c} = \frac{c + b}{c}

= \frac{s ( s + 2.2 ) + 1}{s ( s + 2.2 )}

化简

s (s + 2.2) + 1 : s^{2} + 2.2 s + 1

= \frac{s ^{2} + 2.2 s + 1}{s ( s + 2.2 )}

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