[tex]\int_0^{infinity} \ e^{-s*t}*t*cos(t) dt[/tex](adsbygoogle = window.adsbygoogle || []).push({});

I tried integration by parts with u=t*cost and dv=e^(-s*t) but that didn't get anywhere.

I then tried: [tex]\L{t^n*g(t)}=(-1)^n d/ds[\int_0^{infinity} \ e^{-s*t}*cos(t) dt[/tex] but again nothing was working.

This is a Laplace Transformation where ft=t cos(t)

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# Homework Help: Integration by parts homework help

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