Section21.5

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## 21.5 images6.input

gam(x,y) == The height and color are the
g := Gamma complex(x,y) real and argument parts
point [x,y,max(min(real g, 4), -4), argument g] of the Gamma function,
respectively.
draw(gam, -%pi..%pi, -%pi..%pi, The Gamma Function
title == "Gamma(x + %i*y)", _
var1Steps == 100, var2Steps == 100)
b(x,y) == Beta(x,y)
draw(b, -3.1..3, -3.1 .. 3, title == "Beta(x,y)") The Beta Function
atf(x,y) ==
a := atan complex(x,y)
point [x,y,real a, argument a]
draw(atf, -3.0..%pi, -3.0..%pi) The Arctangent function

function:Gamma function:Euler Beta Euler:Beta function

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