Question: integrating [exp(-cx)]/[a^2+x^2]^1/2

I am attempting to obtain the analytical form of the integral of [exp(-cx)]/[a^2+x^2]^1/2 with respect to x.  Unfortunately, this form does not appear in any of the indefinite integral tables that I have been perusing.  I am attempting to utilize MAPLE but it simply outputs the integral in symbolic form & does not generate the actual function.

Anyone have any leads where I might find the correct form of this integral or how to get MAPLE to cooperate & generate the expression form me in a form that is inddtuitive???

 

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