For real numbers a1, a2, a3, b1, b2, b3, show that (a1b1 +
Chapter , Problem 13(choose chapter or problem)
For real numbers a1, a2, a3, b1, b2, b3, show that (a1b1 + a2b2 + a3b3) 2 (a2 1 + a2 2 + a2 3 )(b2 1 + b2 2 + b2 3).
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