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Question: bound or dummy but ...

Question:bound or dummy but ...

vv 12950 Maple
eval
September 17 2016
1

g:= a -> int(f(x+a),x=a..2*a):
eval(g(x),x=1);
                    int(f(2 x), x = 1 .. 2)
eval(g(z),z=1);
                   int(f(x + 1), x = 1 .. 2)

eval is advertised as smart, but it's not enough!


(Related to a recent answer of Carl Love about bound variables.)

 

Edit: shorter version

g:= a -> int(sin(sin(x+a)),x=a..2*a):
evalf(eval(g(x),x=1))=evalf(eval(g(z),z=1));
                  0.1052070507 = 0.5294405453
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