If v= 2i - j and w= xi + 3j, find all mumbers x for which || v + w || = 9.

G

gabbya

New member
Joined
Jan 3, 2016
Messages
1
Solve the problem.
If v= 2i - j and w= xi + 3j, find all mumbers x for which || v + w || = 9.

Thanks!
 
gabbya said:
Solve the problem.
If v= 2i - j and w= xi + 3j, find all mumbers x for which || v + w || = 9.
Click to expand...
Where are you stuck? You plugged the given forms into the proposed equation, and... then what?

Please be complete. Thank you! ;)
 
gabbya said:
Solve the problem.
If v= 2i - j and w= xi + 3j, find all mumbers x for which || v + w || = 9.

Thanks!
Click to expand...

Hint: Calculate v + w = (2+x)i + 2j

What is the expression for || v+w || ?


 
Last edited by a moderator:
You must log in or register to reply here.
Top