Question: 16. Show that r+l ( y, + .. . + Y.)2 r ( y, + ... + Y.)2 L Y - r+ _
16. Show that r+l ( y, + .. . + Y.)2 r ( y, + ... + Y.)2 L Y - \ r+ \ _ L Y _ 1 r > 0 ; - 1 I r + 1 i-I I r - .
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