+0  
 
0
214
2
avatar+39 

Find the projection of u = <–6, –7> onto v = <1, 1>. 

 

A. < 13/2, -13/2>

B. <39, 91/2>

C.<13/1764, - 13/1764>

D. <2/13, -2/13>

 May 21, 2020
 #1
avatar+976 
+1

If you are going to post your questions 10 times an hour no one will answer it.

 May 21, 2020
 #2
avatar+111455 
+1

Formula

 

proj v u    =  dot product (u, v)

                  _______________   *      b        =

                 (  magnitude of v)^2

 

 

-6*1   +  -7*1

___________ *   ( 1 , 1)     =

  1^2 + 1^2

 

 

-13

___  * (1 , 1)     =

  2

 

 

(13/2, 13/2)

 

 

cool cool cool

 May 21, 2020

12 Online Users

avatar
avatar