Timeline for Differentiate under integral sign for iterated integral?
Current License: CC BY-SA 2.5
7 events
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| Feb 28, 2018 at 16:20 | review | Close votes | |||
| Mar 1, 2018 at 12:17 | |||||
| Apr 1, 2010 at 21:01 | comment | added | Theo Johnson-Freyd |
For $f$ continuous, just draw the darn square and ask yourself what the difference is between integrating over $[0,t]^2$ and over $[0,t+{\rm d}t]^2$.
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| Apr 1, 2010 at 18:51 | answer | added | Gerald Edgar | timeline score: 5 | |
| Apr 1, 2010 at 18:26 | comment | added | Yemon Choi | Also, at the risk of sounding like a grump, did you check the site's FAQ first? mathoverflow.net/faq | |
| Apr 1, 2010 at 18:25 | comment | added | Yemon Choi | 'as I don't know the answer immediately I thought I'd just ask" ... is this a polite way of saying you've thought about it a bit and can't remember how to do it? (and FWIW it is not like differentiating under the integral sign; moreover, without some conditions on $f$ it's not clear to me that you can say anything precise) | |
| Apr 1, 2010 at 18:24 | history | edited | Yemon Choi |
removed math-ed tag
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| Apr 1, 2010 at 18:20 | history | asked | Mike | CC BY-SA 2.5 |