SOLUTION: If // v // = 2, what is //-4v//?
Algebra.Com
Question 161537: If // v // = 2, what is //-4v//?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let . Since ||v||=2, this means that
Now let's compute :
Start with the given vector
Multiply both sides by -4
Distribute
So this means:
||-4v||==4||v||
So this shows us that the length of ||-4v|| is simply 4 times that of ||v||. So the length of ||-4v|| is 8 units
In other words, ||-4v||=8
RELATED QUESTIONS
v-4(4-v)=2(2v-1) this is what i tried
16-5v=4v-1
5v=4v-17 now it get lost please... (answered by tutorcecilia)
(v^2 - 4v)^2 - 17(v^2 - 4v) +60 = 0
This is what I have so far? Not sure where I went... (answered by richard1234,MathTherapy)
If v=<-6,10>, find 4v (answered by Edwin McCravy)
v^2+v-30/4v^2+4v-24 (answered by RedemptiveMath)
v^2 +4v _ 45 =... (answered by sofiyac)
What is v in 11 - 2v = 3 - 4v?
(answered by addingup)
3[2+v]-4v=v+16 (answered by vidhyak)
{{{4v-(v-2)=7-2(3v-4)}}} (answered by eggsarecool)
v^2 +4v-5=0... (answered by checkley77)