# Search results

1. ### I Lewis H Ryder page 61, coordinate transformations

Oh you are absolutely righ, I overthinked that haha and yes i can complete the last step ^^ thanks for your help I appreciate it
2. ### I Lewis H Ryder page 61, coordinate transformations

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?
3. ### A Dirac Propagator

I tried to apply the derivative again and I got the answer now. thank you all and sorry for the messed up thread.
4. ### Mathematica How to solve this differential equation using Mathematica's Dsolve?

Thank you sir
5. ### A Dirac Propagator

sorry, I just read the rules here, I'm kinda new it won't happen again.
6. ### A Dirac Propagator

I did apply the derivative of time only, can u put more details please?
7. ### Mathematica How to solve this differential equation using Mathematica's Dsolve?

thats what i got
8. ### Mathematica How to solve this differential equation using Mathematica's Dsolve?

here's my best try
9. ### Mathematica How to solve this differential equation using Mathematica's Dsolve?

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

11. ### A Dirac Propagator

wanna know how to get to 8.2
12. ### Free Klein Gordon

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