A ald942 New member Joined Oct 4, 2009 Messages 8 Nov 10, 2009 #1 I have afeeling this a simple enough question buti just need to be shown the method of doing it.Thanks. Calculate the dot product, a.b, of the following groups of vectors. (1) a= (2,-2,-1), b=(3,0,-2)
I have afeeling this a simple enough question buti just need to be shown the method of doing it.Thanks. Calculate the dot product, a.b, of the following groups of vectors. (1) a= (2,-2,-1), b=(3,0,-2)
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Nov 10, 2009 #2 ald942 said: Calculate the dot product, a.b, of the following groups of vectors. (1) a= (2,-2,-1), b=(3,0,-2) Click to expand... The dot product of two vectors is a scalar. \(\displaystyle a\cdot b=(2)(3)+(-2)(0)+(-1)(-2)=8\)
ald942 said: Calculate the dot product, a.b, of the following groups of vectors. (1) a= (2,-2,-1), b=(3,0,-2) Click to expand... The dot product of two vectors is a scalar. \(\displaystyle a\cdot b=(2)(3)+(-2)(0)+(-1)(-2)=8\)
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,203 Nov 10, 2009 #3 I know, pka, I was hoping the poster knew the next step. My fault for not elaborating and being rather sloppy. It's early
I know, pka, I was hoping the poster knew the next step. My fault for not elaborating and being rather sloppy. It's early
