f(x)= (x)/(2x+1) then f^-1(x) would =

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Inverse of Switch the x and y variables, Solve for y (I'll leave the algebra work to you), So, .

Originally Posted by andymana f(x)= (x)/(2x+1) then f^-1(x) would = Let f(x)=y= (x)/(2x+1) 2xy+y=x x(2y-1)=-y x=y/(1-2y) therfor f^-1(x)=x/(1-2x)