Find 2 vectors u and v such that they are perpendicular one of the vector is twice the magnitude of the other. And the sum vector of u and v is [6,8]
I did:
Let u=[a,b]
Let v=[c,d]
Let |u|=2|v
u.v=ac+bd=0
|u+v|=|u|^2 + |v|^2
But |u|=2|v|
|u+v|=5|v|^2
5|v|^2=100
|v|^2=20
Im stuck after this
I did:
Let u=[a,b]
Let v=[c,d]
Let |u|=2|v
u.v=ac+bd=0
|u+v|=|u|^2 + |v|^2
But |u|=2|v|
|u+v|=5|v|^2
5|v|^2=100
|v|^2=20
Im stuck after this