Helicoid: $E=v^2+a^2$, $F=0$, $G=1$

For $0<u<2\pi$, $-\infty<v<\infty$, the helicoid is $\bar x(u,v)=(v\cos u, v\sin u, au)$. Then the coefficients E, F, G in the first fundamental form of the helicoid are: