I think you means, :
Because most of these inequalities are cyclic.
Now, by the Cauchy-Swartz Inequality:
By the Cauchy-Swartz Inequality again:
Thus, (by the transitive inequality )
And only equality when .
I think you means, :
Because most of these inequalities are cyclic.
Now, by the Cauchy-Swartz Inequality:
By the Cauchy-Swartz Inequality again:
Thus, (by the transitive inequality )
And only equality when .