Why does integrate ask so many questions?



Hi,

take a look at this:

  (C1) integrate(exp(-%i*x) + a*exp(%i*x),x,0,2*%pi);

  Is  a  positive, negative, or zero?

  positive;
  (D1) 				       0

Why does integrate need to know whether a is positve, negative, or zero? The 
integral is zero, always.

Felix

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