Question: interpolation or table of the pair values of the given plot

Hi

 

trying to make table of points of the pair(lambda1,lambda2) to get the approximate function this technique  is called interpolation

contourplot(4*lambda2*result^2/(Pi*(lambda2+1)^2)-lambda1,lambda1=0..1,lambda2=0..1,contours=[0],axes=boxed,title=tit,titlefont=[SYMBOL,16],thickness=1,color=black,font=[1,1,18],tickmarks=[2, 4],linestyle=1,view=[0.002..1,0.002..1]);

any one knows how to find it

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