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Interate the below fucntion from 0 to infinite please

  • Thread starter Casio
  • Start date
9
0
e^(-Nx^2)cos(Mx) dx = ??? (M,N are const)
Please help. Thanks.
 
9
0
:biggrin: I won't change anything in the above post before reading your posts :wink:
 

Tide

Science Advisor
Homework Helper
3,077
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Are you sure the limits aren't from negative infinity to positive infinity? Otherwise, you will end up with a complex error function (real part).
 
9
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Tide said:
Are you sure the limits aren't from negative infinity to positive infinity? Otherwise, you will end up with a complex error function (real part).
I am sure, I check carefully, I aldready tried, its over 6 and a half pages but unable to get the valeu, you can check it yourself or you want to see my part ?
 

Tide

Science Advisor
Homework Helper
3,077
0
This is what I get:
[tex]Re \sqrt {\frac {\pi}{4m}} e^{i \frac {n^2}{4m}} \left( 1 + erf \left( \frac {im}{2\sqrt m} \right) \right)[/tex]
 

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