• Please take a moment and update your account profile. If you have an updated account profile with basic information on why you are on Air Warriors it will help other people respond to your posts. How do you update your profile you ask?

    Go here:

    Edit Account Details and Profile

I need some help with Multi-variable Calc!!

Status
Not open for further replies.
ET-Mike

ET-Mike

A-Pool Junkie
I know, it makes me cring too, but is there anyone out there who knows enough about Calc to help me out? It is a problem over unit tangent, unit normal, and binormal vectors. There is also a question about the curvature of a function. The assingment is extra credit and it is due tomorrow. If anyone has any ideas, please hit me up. I know it's a long shot, but thanks!
 
J

Jaxs170

www.YANKEESSUCK.com
What exactly is a binormal vector? Is that where your plane decides it wants to go in two directions at the same time and can't figure out how??? :confused:
 
ET-Mike

ET-Mike

A-Pool Junkie
Yes, it is....okay, here is the problem...r(t) = <lnt, t^2, 2t> that is t squared in the middle, I wasn't sure how to do the little 2. Anyways, find the unit tangent vector, the unit normal vector, and the binormal. Basically it is taking the derivative of the whole thing, then taking the magnitude (sqrt of derivative squared) and plugging that in. I know that the derivative of lnt is just 1/t but I get confused finding the magnitude. I would really appreciate some help, but hey, I understand if you don't want to do someone elses homework. But, if you do, now is your time to shine. It is due tomorrow at 1300 central time, I appreciate it everyone.
 
V

vegita1220

User
Can you clarify?

It seems like you're saying you have trouble finding the magnitude...but the magnitude of a vector is the sqrt of the sum of each vector component squared.

You can AIM me if you need help...I'm working on green's and stokes' ATM so i could use the review.
 
Status
Not open for further replies.
Top