Derivative and horizontal tangent help

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Re: Derivative and horizontal tangent help!!!

Try rewriting the function (8x^2/x^2+8) as (8x^2)(x^2+8)^-1 and then try to take your derivative.
 
42
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Re: Derivative and horizontal tangent help!!!

Or if you do not plan on using chain rule for your derivative, you can keep the function how it is and just use quotient rule.
 

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