Sunday, November 1, 2015

polarization - coordinate change differential equation polar


I noticed that v [in step (2.5)] is not the same as the terms from the first formula, even if they are related..


I tried to understand how did he reach to this step:


enter image description here


I got a link (is found here) and still didn't understand the passing to (2.5). please help me to understand it.


any help appreciated!




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