||x||=4, ||y||=5,<x,y>=8.
What is the cauchyshwarz inequality? <This was relatively straight forward.. Not too sure about the rest however..
What is the norm of 4x-4y?
What is the cosine angle between x and 4x-4y?
Find λ, such that 2x-y and λx-y are orthogonal?
Many thanks
I got 28 for the norm of 4x-4y.. I hope thats right.. I then gained th result of 66.4 for the theta angle in part b.. Thanks for the help.
I think im going to need a litrle bit more help with the last part of the question...
As the angle you've found is correct, I think you mistyped your answer to the first question : .
The dot product is a bilinear function : so the LHS of can be expanded.I think im going to need a litrle bit more help with the last part of the question...
This can be further expanded using (2) and (3) to make appear and ...