
#1
Mar113, 06:04 AM

P: 53

Hello
I want to demonstrate a equation of Vector image on another vector (A on B) So i go this steps and as we know so change the equation but in my equation A is (vector scale) not a (Vector)!!!! what is my problem? 



#2
Mar113, 06:58 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,900

You have [itex]\overline{A}[/itex], [itex]A[/itex], and [itex]\left\overline{A}\right[/itex]. I understand that [itex]\overline{A}[/itex] is a vector and that [itex]\left\overline{A}\right[/itex] is its length but what is [itex]A[/itex]?




#3
Mar113, 07:11 AM

P: 53

Thanks for your replay
A and A both of them are length of A vector (in electromagnetic books we assume that A=A for easy to write) 



#4
Mar113, 07:23 AM

Sci Advisor
P: 779

Vector image on another vector
Then pick one and stick with it. Similarly, don't swap between upper and lower case.




#5
Mar113, 08:05 AM

P: 53

I rewrite the Steps.
main formula: steps: as we know and so but in my equation A is (vector length) not a (Vector)!!!! what is my problem? 



#6
Mar213, 11:11 PM

P: 315

Oh Baby,
What are you doing? You are taking the dot product of vector A and vector B which results in a scalar. Then you are taking the dot product of that scalar with vector B. That makes no sense. I think you want the dot product of vector A and vector B/B. B/B is the unit vector in the B direction. Ratch 


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