Given y=e⁷ˣ(f(u),g(x)), find the derivative dy/dx
​a)dy/dx =7e⁷ˣ(f(u),g(x))
b)dy/dx =e⁷ˣ(f(u).g'(x))
c)dy/dx =7e⁷ˣ(f'(u).g'(x))
d)dy/dx =e⁷ˣ(7f'(u)g'(x))