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 Author Comment/Response rsj 07/31/11 7:54pm Hi List. This is my first attempt at using Mathematica. I want it to plot and simply complicated expressions. If I define a function, MyM: A = 1 B = .5 T = 10 MyM[t_] := exp[Integrate[(2 + sin[s]), {s, 0, t}]] - 2 (1 - exp[-B*t])/{2 *(1 - exp[-B*T]) + A*B} Then the command: Evaluate[MyM[3]] succeeds, so Mathematica understands what the function is. But I cannot plot this function or get a numerical estimate. I.e. The command: N[MyM[3]] Gives me an error: "NIntegrate::inumr: "The integrand 2+sin[s] has evaluated to non-numerical values for all sampling points in the region with boundaries {{0,3}}. " I've tried to replace the variable integration endpoint with integration over a constant region: MyM[t_] := exp[Integrate[Boole[s < t]*(2 + sin[s]), {s, 0, T}]] - 2 (1 - exp[-B*t])/{2 *(1 - exp[-B*T]) + A*B} But this also fails with the same error. Any ideas on how I can plot or evaluate this function? URL: ,

 Subject (listing for 'Help Plotting Integral Functions') Author Date Posted Help Plotting Integral Functions rsj 07/31/11 7:54pm Re: Help Plotting Integral Functions S. Saralamba 08/18/11 00:56am
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