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In this video I will find the general solution u(x,y,z,t)=u(f(p))=? to the general form of the 3-D wave equation where the equation is dependent on the x-, y-, z-direction, and time. (Part 1) In this video I will find the constants l^2+m^2+n^2=1 associated with the x-, y-, z-directions.

Next video in this series can be seen at:
https://youtu.be/exgwT3yvUZQ