Register to reply

Vector operations

by Bertrandkis
Tags: operations, vector
Share this thread:
Bertrandkis
#1
Apr10-08, 06:34 AM
P: 25
1. The problem statement, all variables and given/known data
Let x and y be to vectors
Verify whether |xy|<=|x|+|y| for all x,y


3. The attempt at a solution
My first problem with this question is that it does not tell us whether the operation xy is the same as x.y (dot product) or a cross product.
Phys.Org News Partner Science news on Phys.org
Sapphire talk enlivens guesswork over iPhone 6
Geneticists offer clues to better rice, tomato crops
UConn makes 3-D copies of antique instrument parts
HallsofIvy
#2
Apr10-08, 06:44 AM
Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 39,340
Your are right. That is a problem. I am also surprised that is not [itex]|x|^2+ |y|^2[/itex] on the right. I suspect that they mean dot product. I suggest you look at [itex]|(x-y)\cdot(x-y)|[/itex].


Register to reply

Related Discussions
Operations on 2 vector fields? Differential Geometry 3
Vector Operations Precalculus Mathematics Homework 17
Vector Space operations Linear & Abstract Algebra 2
Vector Operations In Polar Coordinates? General Math 1
Vector operations in polar coordinates? Introductory Physics Homework 2