Why are my results not matching for orthonormalized vectors?

Shackleford
Messages
1,649
Reaction score
2
I found the final answer posted online, but my work doesn't match up.

v1 = 3t
v2 = 5t1/2 - 6t

Orthonormalized:

<br /> v_1 = \sqrt{3}t is correct.

<br /> v_2 = \frac{1}{\sqrt{61}}(5t^{1/2} - 6t) does not match.

Furthermore, my part (b) is wrong, too. I know my methods are correct. I don't understand why the answers aren't matching.

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20120211_095108.jpg

http://i111.photobucket.com/albums/n149/camarolt4z28/File.jpg
 
Last edited by a moderator:
Physics news on Phys.org
I realized some of my arithmetic is wrong/incomplete towards the end on (b). It's even worse now.
 
Well, for one thing ##v_1## isn't ##3t##. It is ##t\sqrt 3 ##.
 
LCKurtz said:
Well, for one thing ##v_1## isn't ##3t##. It is ##t\sqrt 3 ##.

Okay, yeah. I see what I wrote down that wasn't exactly right. Let me see if I didn't anything else wrong for the second orthogonal vector.

I found the problem. Thanks!
 
Last edited:
There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply ##\left(r\right)^{\left(\frac{1}{n}\right)}##. Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
Back
Top