How do you find the Laplace transform of t(u[t+4])? I know what to do if it is u(t-4). Thank you for your time
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Originally Posted by leebatt How do you find the Laplace transform of t(u[t+4])? I know what to do if it is u(t-4). Thank you for your time $\displaystyle LT \left[t^n f(t) \right] = (-1)^n \frac{d^n F(s)}{ds^n}$ where $\displaystyle F(s) = LT[f(t)]$. In particular $\displaystyle LT \left[t f(t) \right] = - \frac{d F(s)}{ds}$.
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