1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Vectors - dot product and cross product?

  1. Apr 14, 2014 #1
    Vectors -- dot product and cross product?

    Hello

    may i know when to dot product and cross product?? both look to same to me..
     
  2. jcsd
  3. Apr 14, 2014 #2

    NascentOxygen

    User Avatar

    Staff: Mentor

    The formula will tell you which to use, so pay close attention.

    Basically, the dot product produces a scalar result---it has a magnitude and a + or - sign---but it isn't a vector. The cross product produces an answer which is itself a vector, and it's at right-angles to the plane containing the two vectors you multiplied.
     
  4. Apr 14, 2014 #3

    berkeman

    User Avatar

    Staff: Mentor

    Dot products, cross products, and other basic vector operations are described here:

    http://en.wikipedia.org/wiki/Euclidean_vector

    .
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Vectors - dot product and cross product?
Loading...