- #1

Math10

- 301

- 0

## Homework Statement

Find the speed of an object with r(t)=e^(t)<cos(t), sin(t), 1>.

## Homework Equations

None.[/B]

## The Attempt at a Solution

v(t)=e^(t)<cos(t)-sin(t), cos(t)+sin(t), 1>

I know that the speed is abs(v(t)) and the answer in the book is sqrt(3)*e^(t). So how do I find the speed?