# What is the maximum? What are the principles?

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Then teach the underlying concepts

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Junaid Mirza
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Jun 20, 2018

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If

#(ab)/(a + b) < c < (ab)/(b - a) color(white)(...)# [Click here for derivation]

#(6 × 14)/(6 + 14) < c < (6 × 14)/(14 - 6)#

#84/20 < c < 84/8#

#4.2 < c < 10.5#

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