Read post #5 of this thread: http://www.mathhelpforum.com/math-he...-function.html
I've got this problem:
f(y) = , y>0
0, elsewhere
Now I'm supposed to find for any positive integer k.
I start out like this:
= =
I then move out and m outside the integral =
=
and from here I don't know how to go on. The correct answer is
and I know that
but I don't see how can be rewritten to the correct answer. Thanks in advance for your help.
Read post #5 of this thread: http://www.mathhelpforum.com/math-he...-function.html
Your substitution is incorrect for a number of reasons:
1. You still have y in the integral, there should only be u's.
2. You have not substituted the correct exprssion for dy. !
Note that and .
It's expected that at this level you can correctly substitute a change of variable in an integral.