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Homework Statement
The given function is an even function. I tried using properties but did not get any satisfying result.
I tried many thingsHave you tried a substitution?
Yes I forgot about that. Which property shall I use then?The fact that the function is even is relevant only when the limits of integration are symmetric, with a = -b.
I looked carefully. Nothing popped out.What substitutions did you try? If you look carefully at what you get from the substitution, the answer might pop out even though it looks like you've reached a dead end.