a) How can I simplify so I can get from:
f(f(x))= [(x-sqrt3)/(xsqrt3+1)-sqrt3]/[(x-sqrt3)/(xsqrt3 +1)*sqrt3 +1] to f(f(x)) = (x+sqrt3)/(1-sqrt3*x)?
b) How can I simplify from: f(f(f(x)) )= [(x+sqrt3)/(1-sqrt3 *x) +sqrt3]/[1-sqrt3(3+sqrt3)/(1-sqrt3 *x)] to f(f(f(x)))=x?
Thank you!
