Question: How do I plot complex functions like the Gamma- and Betafunction?

I'm brand new to Maple. How can I plot the Gammafunction with real numbers (not in N and C)?

I can only plot the Gammafunction in the complex plane by using the following:

with(plots);

f:=z->GAMMA(z);

complexplot3d(f);

Is it also possible to plot the Betafunction B(a,b):=int(t^(a-1)*(1-t)^(b-1),t=0..1) in such a way that I can assign special values to a and b?

These solutions will help me so much....Thank you for your answer!!!

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