# Inner product(norm)

How to find a ||2w-v||,by giving <v,w> = -3, ||v||=2 and ||w||= 7.

Actually I find that it was undefined, I not sure its correct or not, so I need yours to help me thanks.:shy:

Finally I find it is equal to $$\sqrt{212}$$. Am I right?

jbunniii
Finally I find it is equal to $$\sqrt{212}$$. Am I right?