- #1

PsychonautQQ

- 784

- 10

## Homework Statement

Find the arc length parameterization of r(t) = <(e^t)sin(t),(e^t)cos(t),10e^t>

## The Attempt at a Solution

so I guess i'll start by taking the derivative of r(t)...

r'(t) = <e^t*cos(t) + e^t*sin(t), -e^t*sin(t) + e^t*cos(t), 10e^t>

ehh...

now do I do

ds = |r'(t)|dt

and integrate? what then? I don't really understand the question or what I'm trying to do really...

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