How do I solve this ?
i.e. a trig substitution.
I didn't know that was called Weierstrass substitution. I've always known it as "t-formula".
okay..... I´m lost!
Silverbabe, search for "Weierstrass substitution" or "trigonometric substitution" in your calculus book, library, the Internet, or Wikipedia, and you'll find out what it means
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