Condition for fraction being negative

gsouza994

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Dec 3, 2020
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I want to analyze the conditions for the following fraction being negative:
Fraction.PNG
Every term is a constant, except for 'b'.

So I did the following:
Development.PNG
The development is not complete yet, but I reached this apparent inconsistency. I can't understand why it seems that I reached a condition that doesn't depend on gamma(b), and yet the fraction still is positive for some values of gamma(b). Can someone help me with this?

Thank you.
 
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