# Can anyone give me a hint to solve ccL(int_0^t (e^(-tau)-1)/(tau)d tau)

Can anyone give me a hint to solve laplace transform $\mathcal{L}\left({\int }_{0}^{t}\frac{{e}^{-\tau }-1}{\tau }d\tau \right)$
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AKPerqk
First try finding the laplace transform of this function:
$\frac{{e}^{-t}-1}{t}$
Using the rule:
$L\left(\frac{f\left(t\right)}{t}\right)={\int }_{s}^{\mathrm{\infty }}g\left(s\right)$
where
$L\left(f\left(t\right)\right)=g\left(s\right)$
then try using the rule
$L\left({\int }_{0}^{t}f\left(t\right)dt\right)=\frac{g\left(s\right)}{s}$