For #22, how does the answer come out to be e? I keep 2+e, which is the answer for choice C. Does anyone know how to do this?
For #23, I don't understand this problem either. Any help would be greatly appreciated..
Thanks.
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Okay I know Maria got this but in case anyone else needs 22 (or 13, for that matter) I typed this up for a friend and here is what I typed up for him.
http://img522.imageshack.us/img522/8826/mathwo7.gif
That's a ".gif" file, by the way. It doesn't show up on my computer so yeah.
Okay for number 23, I had my friend help me with this. He recognized the series as xsinx, so plug that in and you get the integral of xsinx from 0 to pi. Use integration by parts or tabular integration and you should get -xcosx+sinx from 0 to pi. And thus, you get pi as your answer.
Thanks so muchhhhh!!!! :D
Thanks Amy!! I needed help on those too.
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