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Find Fourier cosine transform of exp(-a²x²) and hense evaluate Fourier sine transform of x.exp(-a²x²).

i can solve this ques. only if there is x instead of x² in the exponential function exp(-a²x²). bcoz in this situation i can use integral formula :- ⌠exp(-ax)cos(sx)dx = exp(-ax)/a²+x²[bsin(sx)-acos(sx)] but what should i do if there is x² in exponential function exp.??

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Read the FAQ: mathoverflow.net/faq – Stopple Dec 15 2010 at 20:49
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 Find mathoverflow.net/howtoask and mathoverflow.net/faq#whatnot and read them, please. – Yemon Choi Dec 15 2010 at 21:02
sorry i am new here and in hurry as well bcoz day after tomorrow is my end-sem exams. i can solve this ques. only if there is x instead of x² in the exponential function exp(-a²x²). bcoz in this situation i can use integral formula :- ⌠exp(-ax)cos(sx)dx = exp(-ax)/a²+x²[bsin(sx)-acos(sx)] but what should i do if there is x² in exponential function exp.?? – unknown (google) Dec 15 2010 at 21:25
Ask your question on math.stackexchange.com instead. – Jason Dec 15 2010 at 22:11

closed as off topic by Yemon Choi, Will Jagy, Andrew Stacey, Andrey Rekalo, David Hansen Dec 15 2010 at 21:36

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