For example, the identity function,Originally Posted by nath_quam
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Quick I am proud that yiu deleted your post
(I am moderator I can see everything you do, in case you are wondering).
Hello, Nath!
. using
We can do it, but it takes a lot of work
and you're expected to be very familiar with Trigonometry.
I'll go through the whole thing in baby-steps . . .
Let
Note that: .
Substitute: .
Double-angle identity: .
Integrate: .
Half-angle identity: .
Now we must back-substitute.
We have: .
. . and: .
So we have: .
. .
. .
. .