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#1 2005-09-07 04:37:25

abel
Member
Registered: 2005-09-07
Posts: 1

an exponential integral

Hi there...i would very much like to know the analytical solution to the following exponential integral...

Exp[a*cos(b-c)] dc

where a and b are constants and cos is the cosine.

Thanks in advance,
Abel

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#2 2005-09-08 05:28:16

kylekatarn
Member
Registered: 2005-07-24
Posts: 445

Re: an exponential integral

I can only give you the definition of exponential integral because my knowlege on this topic is very limited.

    
         ∞    z^k                            1
Ei(z) =  ∑  (-----) + EULER_GAMMA_CONSTANT + -ln(z²)
        k=1   k.k!                           2

I don't know if this helps sad

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