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Find integrals

  • Thread starter firenze
  • Start date
  • #1
5
0
Find the two integrals:
[tex]\int_0^{\infty}\frac{e^{-\alpha x^2}}{x^2+1}\sin(\alpha x) \, dx [/tex]
[tex]\int_0^{\infty}e^{-\beta^2t}\cos(\beta x) \, d\beta [/tex]

Any hint?
 

Answers and Replies

  • #2
34
0
Find the two integrals:
[tex]\int_0^{\infty}\frac{e^{-\alpha x^2}}{x^2+1}\sin(\alpha x) \, dx [/tex]
[tex]\int_0^{\infty}e^{-\beta^2t}\cos(\beta x) \, d\beta [/tex]

Any hint?
As you have not provided any of your own work, that is all I can give. You should have some kind of book or lists with definition of some ways to perform integration, such as reverse chain rule, u substitution, integration by parts and so on.

Which one(s) can you apply here?
 
  • #3
3,763
8
Or complex integration ???


marlon
 
  • #4
daniel_i_l
Gold Member
867
0
parts + substitution
 

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