Recent content by Ayoub Tamin

Oh you are absolutely righ, I overthinked that haha and yes i can complete the last step ^^ thanks for your help I appreciate it

The example is about the transformation between the cartesian coordinates and polar coordinates using the definition In lewis Ryder's solution, I got confused in this specific line I really can't see how is that straightforward to find?

I tried to apply the derivative again and I got the answer now. thank you all and sorry for the messed up thread.

Thank you sir

sorry, I just read the rules here, I'm kinda new it won't happen again.

I did apply the derivative of time only, can u put more details please?

thats what i got

here's my best try

I'm actually so beginner in Mathematica, just want to know how to put the code in , idk what i did or what went wrong but i want to know the right way to it ù-ù

wanna know how to get to 8.2

Homework Statement i need a detailed solution for Classical field Klein gordon equation please , i just stop when the delta function get evolved in Homework Equations The Attempt at a Solution