Well I'm actually struggling through this last ejercice where im asked the next:
Knowing that P,Q and R are vectors from Rn and they're no nulls.
Find:
||p|| and ||q||
Knowing that:
|||R||=6
||P+Q||=√135
P=2Q+R
-3+Q.R=0
--------------------------------
By far i just found that
Q.R=3
P=2Q+R
||P||2=4||Q||2+2Q.R+||R||2
||P||2=4||Q||2+42
What should i do? Thanks for taking a look and I'll very grateful if someone can lend the name of a book or page where i can lear this better(The property of the vectors)
Knowing that P,Q and R are vectors from Rn and they're no nulls.
Find:
||p|| and ||q||
Knowing that:
|||R||=6
||P+Q||=√135
P=2Q+R
-3+Q.R=0
--------------------------------
By far i just found that
Q.R=3
P=2Q+R
||P||2=4||Q||2+2Q.R+||R||2
||P||2=4||Q||2+42
What should i do? Thanks for taking a look and I'll very grateful if someone can lend the name of a book or page where i can lear this better(The property of the vectors)