- #1
jumbogala
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Homework Statement
Let's say you make the inverse substitution x = 2tan(z) in some integral.
Let's say you evaluate the integral get something like like 4sin(z). How do you put z back in terms of x?
Homework Equations
The Attempt at a Solution
I can do it by saying arctan(x/2) = z, but my teacher said we are not allowed to state the answer that way. I'm not sure how else you would do that...?