Recent content by rockymcrockerso

Yeah I figured it out...it's Acosx+Bsinx...right? (I warned that I don't know what the heck I'm doing).

Homework Statement Uxx +u(x,y)=0 Homework Equations ? The Attempt at a Solution Step 1) u(x,y)=A(x)B(y) Step 2) uxx=d^u/dx^2 Step 3) d^u/dx^2 + A(x)B(y) = 0 Step 4) d^u/dx^2 = -[A(x)B(y)] (?) I have no idea what I'm doing, so small words would be useful.