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Student Support Forum: 'Solve one limit for a given integral?' topicStudent Support Forum > General > "Solve one limit for a given integral?"

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Author Comment/Response
KurtVega
07/26/11 05:01am

"Solve" seems to fail finding the upper limit to this given integral:

Solve[Integrate[
Sqrt[(1 - (6.8 x)/E^(4 x^2) + (2 x)/
Sqrt[1 + 4 x^2])^2 + (-1 - (6.8 x)/E^(4 x^2) + (2 x)/
Sqrt[1 + 4 x^2])^2], {x, -1.5, b}] == 0, b, Reals]

Basically I want to find the upper limit 'b' given a lower limit (here -1.5) and a curve segment length (here 0, for simplicity). However, I haven't found a way to make this work (used NSolve and NIntegrate without luck). I need to do this for a lot of upper limits - please don't tell me I need to manually find them by trial and error, because that would take hours! :)

TIA for your help!

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Subject (listing for 'Solve one limit for a given integral?')
Author Date Posted
Solve one limit for a given integral? KurtVega 07/26/11 05:01am
Re: Solve one limit for a given integral? jf 07/27/11 12:18pm
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