
#1
Jun1404, 01:43 PM

P: 2

hi all,
i've tried to solve this thing with Derive, but it gave me some vague erf(x) function (error function??). Is there some gosumathematician who can help me solve the integral? [tex] \int exp(x^2) dx [/tex] tnx 



#2
Jun1404, 02:08 PM

Emeritus
Sci Advisor
PF Gold
P: 11,154

There is no analytic form to the gaussian integral. You need to look up values in the erf table for definite integrals.




#3
Jun1404, 02:54 PM

P: 2

ah, that clarifies a lot, thank you.




#4
Jun1404, 03:43 PM

P: 65

integrate exp(x^2), dx
Tom did this using double integration here: http://www.physicsforums.com/showthr...t=25798&page=2
Have fun! 



#5
Jun1404, 03:58 PM

P: 678





#6
Jun1604, 10:46 PM

P: 65





#7
Jun1604, 11:29 PM

P: 37

It's the limits of integration that count here. Say you're trying to integrate a hard function, but there's a neat little trick for working out the integral from zero to infinity. That trick probably won't help you if you're integrating from, say, 1 to 5.729.




#8
Jun1704, 07:25 AM

P: 80

When I first did that integral (the trick way with the nice limits) I thought it was the neatest thing.




#9
Jul904, 02:11 PM

P: 1

Hello to you all,
i've tried hard to solve this problem related with the wind resources, but so far like Tom Mattson said in is post, i solved the problem to k=2, but i can't solve it to any k>0!!! integrate exp((x/C)^k), dx with k>0 and C>0 Is there anyone willing to help me ???? Perinhas. 


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