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OpenStudy (anonymous):
Help!!! Medal to correct answer True or false? The value 4 is an upper bound for the zeros of the function shown below. f(x)4x^3-12x^2-x+15
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Directrix (directrix):
It may be an upper bound but I think it is not the least upper bound. Are you looking for the least upper bound? @TeddyShot
OpenStudy (anonymous):
No its just a true or false question
OpenStudy (anonymous):
If it is upper bound then its true
OpenStudy (anonymous):
The roots are x=-1, 1.5, and 2.5
OpenStudy (anonymous):
It was true.
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Directrix (directrix):
Yes, it is true because the roots are less than 4.
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