Intergral of (e^(3/x))/(x^2) ?

[BadCompany89]

I know how to do a u substitution, but can it be applied to this equation?

 

[Matthollyw00d]

u=3/x
du=-3dx/x^2

-1/3 ∫e^u du

etc.

 

[BadCompany89]

ah, thanks