Someone knows why this is happening? and it work a few days ago

[KSSV]

What error you are getting now? It should run now too.

[Torsten]

Why what is happening ?

Answer 1

[DGM]

You have a script called polar.m which is shadowing the builtin function polar(). Change the name of that script.

[M. Levi]

thanks its working, and i thought that's just the name of the function itself