Homework Statement
Utt-Uxx+2Uxy-Uyy=0
with the conditions:
U(1,x,y)=cos(x)+ey
Ut(1,x,y)=sin(x)-y2
Homework Equations
Not using separation of variables to solve.
The Attempt at a Solution
I've gotten the general equation to be of the form:
U(t,x,y)=ψ(x+t,y-t)+ζ(x-t,y+t)...
Homework Statement
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