- #1

jumbogala

- 423

- 4

## Homework Statement

Find the Laplace transform of f(t).

f(t) = -9t + 7 + u

_{5}(-7 + 9t + e

^{t})

## Homework Equations

## The Attempt at a Solution

The Laplace transform of -9t is just -9/t

^{2}

The Laplace transform of 7 is 7/s

But I am not sure how to find it for u

_{5}(-7 + 9t + e

^{t}). In the tables it says u

_{a}(t)f(t-a) = e

^{-as}F(s). Is that the line I should use? Even if it is, I don't know how.