- #1
bl4ke360
- 20
- 0
Homework Statement
r(t)=<t^2,lnt,tlnt>
Homework Equations
k= |T '(t)| / |r '(t)|
The Attempt at a Solution
My professor's answer sheet solved the problem using the other method, k(t)=|r '(t) x r ''(t)| / |r '(t)|^3
and that answer ends up being 0.3, while mine is 0.4. I can't see where I made any mistakes, and why I got 9 points marked off. Can someone explain?