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Hello all and a good evening

 

I am trying to find a minimum value of the following(without calculus or a calculator)

 

\(f(x)={log}_{2}(-20x+12\sqrt{x})\)

 

I think I need to do some sort of manipulation to end up with a quadratic expression but I am not sure? Any ideas? Thanks.

 Apr 15, 2020
 #1
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Sorry, a maximum value, not minimum.

 Apr 15, 2020

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