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Question: Calculate integral?

Question:Calculate integral?

Mariusz Iwaniuk 1521 Maple 2018
cauchyprincipalvalue
April 28 2018
1

int(exp(-sec(t))*cos(t)/(-1/4+sin(t)^2), t = 0 .. (1/2)*Pi, CauchyPrincipalValue = true, numeric = true);

Returns unevaluated for me.

I tried all the methods in HELP documentation and I failed.
Integral is singular at point 1/4.

Thank you.
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