From Low pass filter to another filter

[cptburgos]

Hello everyone:

Thanks for this great forum and let the DSP live longer :razz::razz:

I have a question for you guys, hope somebody could help me finding the answer.

look this picture:



Anybody could help me giving some clues of how to solve it?...

Thanks in advance

 

[cptburgos]

Why these filter's limits

Hello everyone:

i found the answer for the last problem posted here but i can understan why these limits specially the π-(wc/2)

Thanks for your help.