Question 1185134
{{{x=2(I-2)^2+1}}}

{{{2(I-2)^2=x-1}}}

{{{(I-2)^2=(x-1)/2}}}

{{{I-2=0+- sqrt((x-1)/2)}}}


{{{highlight(I=2+- sqrt((x-1)/2))}}}-------the whole inverse relation



Given Function
{{{graph(400,400,-10,10,-10,10,2(x-2)^2+1,x)}}}


Inverse RELATION
{{{graph(400,400,-10,10,-10,10,x,2-sqrt((x-1)/2),2+sqrt((x-1)/2))}}}