Visit http://ilectureonline.com for more math and science lectures!
In this video I will show that u1=x^2-y^2, u2=(e^x)cosy, and u3- ln(x^2+y^2) are all general solutions of a 2nd order partial differential equation, PDE.
Next video in this series can be seen at:
https://youtu.be/PzzpIsANA0Q