- #1
monnapomona
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Homework Statement
Find the length of the curve:
r(t) = e-2t i + e-2t*sin(t) j + e-2t*cos(t) k, 0 ≤ t ≤ 2π
Homework Equations
L = ∫[itex]\stackrel{b}{a}[/itex] |r'(t)|
The Attempt at a Solution
I tried factoring out e-2t and got:
e-2t (i + sin(t) j + cos(t) k)
This is where I got lost. Can I take the derivative this and just leave e-2t outside of the brackets?