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September 18, 2014

September 18, 2014

Posted by **sandra** on Friday, December 21, 2012 at 12:54am.

Find the value(s) of x where f(x) has a horizontal tangent (slope=0)

- ap calculus -
**Steve**, Friday, December 21, 2012 at 12:12pmhorizontal slope means f' = 0

f'(x) = (3x-1)(x+1)

now it should be clear.

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