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 Author Comment/Response Xiangyu Meng 10/09/12 10:51am Define a function as the solution of a PDE: fsol[K_, \[Delta]_?NumericQ] := NDSolve[{0.5* Derivative[2, 0][u][x, t] + Derivative[0, 1][u][x, t] == -Exp[-2 K t], u[-\[Delta], t] == 0, u[\[Delta], t] == 0, u[x, 1] == 0}, u[x, t], {x, -\[Delta], \[Delta]}, {t, 0, 1}] I can evaluate the function as follows: fsol[-1, 1] /. {x -> 0, t -> 0} but the output is {{u[0, 0] -> 1.87386}} How can I only get 1.87386 without u[0,0]. Since this value will be used for some calculation. URL: ,

 Subject (listing for 'Get only numerical value from a structured output') Author Date Posted Get only numerical value from a structured output Xiangyu Meng 10/09/12 10:51am Re: Get only numerical value from a structured ... Bill Simpson 10/09/12 12:28pm
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