× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
1
Home Q & A Board Science-Related Homework Help Physics
New Topic  
mickey16 mickey16
wrote...
Posts: 40
Rep: 0 0
11 years ago
What is the cross product of the cross product of the dot product of the vectors a = <3,4,5> and b = <5, 6, 7>?

What does it geometrically mean?
Read 382 times
3 Replies

Related Topics

Replies
wrote...
#1
11 years ago
you cannot find the cross product of the dot product of two vectors.
The dot product of two vectors results in a scalar, and the cross product is an operation formed on two vectors, so you need two VECTORS as inputs.
Your question does not make sense.
wrote...
#2
11 years ago
Lets say you have two vector a and b.  Take the dot product

a . b = s where s  = scalar.  Now the cross product of a scalar with a vector is undefined - cross products are only defined among vectors.  So I don't understand the question.  Perhaps you phrased it incorrectly?
wrote...
#3
11 years ago
Well, when you do the dot product of two vectors, you get a scalar, and when you do the cross product of two vectors, you get a vector back.  In your case though, it's not possible, since you can't do a cross product of scalars because that's not defined.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1234 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 7270
  
 736
  
 950
Your Opinion
Previous poll results: Where do you get your textbooks?