Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Math Topics » geometry.college.independent

Topic: Difficult Integral
Replies: 2   Last Post: Nov 7, 2012 8:08 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Oscarville

Posts: 12
Registered: 12/17/10
Difficult Integral
Posted: Aug 19, 2011 3:36 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Hi. I have an integral which I cannot solve.

Integrate: [(e^t) + (t^2) + 1]^1/2

That's the general look of it. Wolfram Alpha reported: Indefinite Integral: (no result found in terms of standard mathematical functions)

It did however report a series expansion of the integral at t = 0.

So, I'm trying to suggest a formula for the arc length of a three dimensional curve. I've identified the parameters and explicated it towards the arc length formula in three dimensions. All seemed to be going smooth until I reached this point. As the variable (t) shows up on top of e as well as a regular "number", raised to the power 2, I'm at a total loss as to how this integral might be solved. I'm also fuzzy on what the series expansion might have to offer in terms of yielding an arc length value from t=0 to whatever I desire (but I will look into that further).

It would be nice to find an equation for this. If anyone has any suggestions or tips on how to approach this integral I would be very grateful. Thanks

-Oscar



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.