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## Homework Statement

L[[itex]t^{2}[/itex] - [itex]t^{2}[/itex]δ(t-1)]

## Homework Equations

L[ [itex]t^{n}[/itex]f(t)] = ([itex]-1^{n}[/itex]) [itex]\frac{d^{n}}{ds^{n}}[/itex] L[f(t)]

L[δ-t] = e^-ts

## The Attempt at a Solution

My teacher wrote [itex]\frac{2}{s^{3}}[/itex] [itex]-e^{s}[/itex] as the answer.

I got [itex]\frac{2}{s^{3}}[/itex] + [itex]\frac{e^-s}{s}[/itex] + 2 [itex]\frac{e^-s}{s^2}[/itex] + [itex]\frac{2e^-s}{s^3}[/itex]

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