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" 8.If "f(x)=(2x)/(1+x^(2))," show that ...

" 8.If "f(x)=(2x)/(1+x^(2))," show that "f(tan theta)=sin2 theta

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If f(x)=(2x)/(1+x^2)\ , show that f(tantheta)=sin2theta)

If f(x)=(2x)/(1+x^2)\ , show that f(tantheta)=sin2theta)

If f (x)= (2x)/(1+x^2) , prove that f (tan theta)=sin 2 theta .

If f(x)=(1-x^(2))/(1+x^(2)) then show that f(tan theta)=cos2 theta

If f: R to R is defined by f(x)=(1-x^(2))/(1+x^(2)) then show that f(tantheta)=cos2theta.

If f: R to R is defined by f(x)=(1-x^(2))/(1+x^(2)) then show that f(tantheta)=cos2theta.

If f(x) =(1-x^2)/(1+x^2) , prove that f (tan theta)= cos 2 theta .

If f (x)= (1+x)/(1-x) , show that f (f (tan theta))=- cot theta .

If f(x) = (1+ x)/(1-x) , show that f(f (tan theta)) = - cot theta .