(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

This is part of the proof of Schwarz inequity.

Please help me understand the following equation , i think it should not be a equal sign instead it should be greater or equal to.

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Abstract Algebra

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