/usr/lib/open-axiom/input/images6a.input is in open-axiom-test 1.5.0~svn3056+ds-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | --Copyright The Numerical Algorithms Group Limited 1994-1996.
-- 3-d surface whose height is the real part of the Gamma function,
-- and whose color is the argument of the Gamma function
gam(x,y) ==
g := Gamma complex(x,y)
point [x,y,max(min(real g, 4), -4), argument g]
draw(gam, -%pi..%pi, -%pi..%pi, title == "Gamma(x + %i*y)",
var1Steps == 100, var2Steps == 100)
-- The Beta function
b(x,y) == Beta(x,y)
draw(b, -3.1..3, -3.1 .. 3, title == "Beta(x,y)")
-- The complex arc tangent function
atf(x,y) ==
a := atan complex(x,y)
point [x,y,real a, argument a]
draw(atf, -3.0..%pi, -3.0..%pi)
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