Posted by **grace** on Friday, August 30, 2013 at 3:40am.

Given that r1=6i-8j+2k,r2=4i+5j+7k,r3=-2i+j+6k is a vector. Find r1r2,r2r3,r3r1(a)30,21,-8(b)26,23,8(c)24,19,-7(d)19,27,7

- geometry -
**Steve**, Friday, August 30, 2013 at 4:53am
If r1r2 means r1•r2, then that's just -2

If you mean r1×r2, that would be -66i-34j+32k

Again, the alleged choices don't mean much to me.

- vector and geometry -
**isaac**, Wednesday, November 5, 2014 at 5:27pm
Given that;r-1=6i-8j=2k, r2=4i=5j=7k, r3=2i=j=6k. Find r1,r2.

- geometry -
**isaac**, Wednesday, November 5, 2014 at 5:29pm
-2

## Answer This Question

## Related Questions

- Physics Classical Mechanics - A yo-yo of mass m rests on the floor (the static ...
- Applied Maths - Given that position vector a=4i+2j, position vector b=13i+5j are...
- calculus - State whether or not the following statements are true. Justify your ...
- Precalc - Given the plane 3x+2y+5z=54 and the points P0(6, 8, 4)[on plane] and ...
- physics - The drawing shows a force vector vector F that has a magnitude of 600 ...
- Physics - You are given vectors A = 5.0i - 6.5j & B = -3.5i + 7.0j. A third ...
- Physics - You are given vectors A = 5.0i - 6.5j and B = -2.5i + 7.0j. A third ...
- mathematical physics - Given two vector function vector a(t)=(2t+3)i^+(t^2-2)j...
- Calculus - Dot Product - consider a rhombus ABCD a) find the resultant of vector...
- jane - 1. a centripetal-acceleration addict rides in uniform circular motion ...

More Related Questions