Can anyone help me with this problem:

http://img819.imageshack.us/img819/2552/imgpv.jpg

Printable View

- February 11th 2011, 05:26 PMziane0210Vectors
Can anyone help me with this problem:

http://img819.imageshack.us/img819/2552/imgpv.jpg - February 11th 2011, 05:28 PMAckbeet
This is more of a pre-calc or algebra question, just fyi. You can report your own post (use the little triangle symbol with the exclamation mark in it), and a mod will move it for you.

What ideas have you had so far? - February 11th 2011, 06:46 PMProve It
(ii) Try evaluating the dot product...

- February 12th 2011, 04:13 AMHallsofIvy
Any vector that is parallel to is of the form . Any vector that is perpendicular to is of the form . Find a and b so that