Recent content by Candy309

The equation have to transform is d^2T/dx^2=dT/dt

How do you do the change of variable when xi=x-s(t)/1-s(t) and T=(1-s(t))*F(xi,t). I want to transform partial derivative of T with respect to t.

Yes it is

I have to solve a heat equation but first I must change the variables.

Hi It's the greek letter delta. I want to tranform (delta T)/(delta t)

Sorry it's \deltaT /\deltat

Hi there I am given xi=x/s(t) and T=h(t)F(xi,t) and I need to tranform deltaT/deltat. How do I do it? Do I use the chain rule? The answer to it is : s*(dh/dt)*F+s*h*(deltaF/deltat)-xi*(ds/dt)*h*(deltaF/deltaxi) but I don't know how to get this answer. Please help me. Thank you