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Use the Cauchy-Schwartz inequality to prove a. the square of the mean of n is less than the mean of their squares, ie ( n
Use the Cauchy-Schwartz inequality to prove
a. the square of the mean of n is less than the mean of their squares, ie
(n1i=1nai)2n1i=1nai2.
b. that for real numbers xi,
(x1+x2++xn)(x11+x21++xn1)n2.
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