Vikas TU
Last Activity: 8 Years ago
Roots of x2+x+1 are imaginary that are w and w^2 which are the cubic roots.
Hence this would satify the h(w) eqn.
Therfore,
h(w) = 0 => wf(1) + wg(1) = 0
or
w(f(1) + g(1)) = 0
w cannot be zero hence obvious
f(1) + g(1) = 0.
Third option