Cv=(x−1)RC_v=(x-1)RCv=(x−1)R
Cv=Rx−1C_v=\frac{R}{x-1}Cv=x−1R
Cv=R(1−x)C_v=\frac{R}{(1-x)}Cv=(1−x)R
Cv=R1+xC_v=\frac{R}{1+x}Cv=1+xR