What is the partial derivative of u with respect to t in the given equation?

[avinash patha]

if u(x,t)=ae^-gx sin(nt-gx) where A,g and n are const.,and partial derivative of u w.r.t t=
a^2[(partial derivative w.r.t x(partial derivative of u w.r.t x)] show :(1/a)[n/2]^1/2=g

 

[NoMoreExams]

So... show some attempt?