逆 (s^2-10s+21)/((s-3)^2(s+3))

解

逆

\frac{s ^{2} - 10 s + 21}{( s - 3 ) ^{2} ( s + 3 )}

\frac{1 + 1 - 4 s ( - 9 s + 7 )}{2 s}, \frac{1 - 1 - 4 s ( - 9 s + 7 )}{2 s}

解答ステップ

y = \frac{s ^{2} - 10 s + 21}{( s - 3 ) ^{2} ( s + 3 )}

s

を以下で置き換える:

y

s = \frac{y ^{2} - 10 y + 21}{( y - 3 ) ^{2} ( y + 3 )}

y

を解く

s = \frac{y ^{2} - 10 y + 21}{( y - 3 ) ^{2} ( y + 3 )}

\frac{1 + 1 - 4 s ( - 9 s + 7 )}{2 s}, \frac{1 - 1 - 4 s ( - 9 s + 7 )}{2 s}