Hi, I can't quite figure out what I'm doing wrong here. I tried restarting mathematica as well which is what fixed my previous problem(adsbygoogle = window.adsbygoogle || []).push({});

and I'm getting the error:Code (Text):Clear[eqn, soln, u, x, y]

eqn = D[u[x, y], {x, 2}] + D[u[x, y], {y, 2}] == 0;

soln = NDSolve[{eqn, u[x, 0] == Sin[x], u[0, y] == 0, u[1, y] == 0},

u[x, y], {x, 0, 1}, {y, 0, 1}]

Code (Text):NDSolve::ivone: Boundary values may only be specified for one independent variable. Initial values may only be specified at one value of the other independent variable. >>

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# Another Problem with NDSolve

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