1. ## Trapezoidal rule problem

http://i33.tinypic.com/2i3e9u.jpg

details of my question are in there ^

2. Originally Posted by janedoe
http://i33.tinypic.com/2i3e9u.jpg

details of my question are in there ^

I cannot read the integral in your image, but this is my guess. Is this it:

$\displaystyle \int_5^7 \sqrt{4+u^5} \, du$

3. yes....sorry, i know its small, i think you have to click it once to zoom, if you have the option.

4. Hello janedoe
Originally Posted by janedoe
http://i33.tinypic.com/2i3e9u.jpg

details of my question are in there ^

If the question is indeed $\displaystyle \int_5^7\sqrt{4+u^5}du$, then I agree with your answer: $\displaystyle 179.567$. I think we have some crossed wires somewhere.

I think we have some crossed wires somewhere.
Well, it wouldn't be the first time! But thanks for reassuring me of my sanity. I'll have to let my teacher know about this mistake.

For the record, is that integral easily solved to get the exact answer, or isnt it an elementary function?

6. Hello janedoe
Originally Posted by janedoe
For the record, is that integral easily solved to get the exact answer, or isnt it an elementary function?
I can't see any straightforward way of solving it.