i want proof to besel's inequality and cauchy schwartz's inequality.and length of the vector also.and how to speak [double bar of vector x]?

Question

perl · Answer

im somewhat familiar with cauchy schwartz's inequality
has to do with the magnitude of the dot product of x and y

ganeshie8 · Answer

$$\large    \|x\|$$

zzr0ck3r · Answer

There are many versions all over the internet. I would find one and ask any particular question you have.

zzr0ck3r · Answer

zzr0ck3r · Answer

there is 10ish in that pdf

zzr0ck3r · Answer

$||x||$ is the  norm of $x$