Error with "Plot" using custom defined function

patrickcesarano · October 4, 2020, 7:53am

I have drastically simplified my problem, see attached nb. Basically, I define f[x_]. I ask Mathematica what is f[x]? Correct result returned. I copy/paste the output of f[x]…correct plot. I ask Mathematica to plot f[x] itself…error. Why?

Function_Problem.nb (41.2 KB)

mariuszi28cg · October 4, 2020, 10:03am

Try:

Plot[Evaluate@f[x], {x, 0, 2 \[Pi]}]

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Error with "Plot" using custom defined function

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