Find R^(')(1), where:
R(x)=(1+x^(2)+x^(4)+x^(6))/(1+x^(2)+x^(4)+x^(6)+x^(8))
Hint: Instead of finding R^(')(x) first, let f(x) be the numerator and g(x) be the denominator of R(x) and compute R^(')(1) from f(1),f^(')(1),g(1) and g^(')(1).
Zx-3 Find R'(1),where:
1+x2+x4+x6
Hint: compute R'(1) from f(1), f'(1), g(1) and g'(1).