bigworm
How do I find the maximum and minimum values of f(x)=x^35x^2+3x+12



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tomo
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set the second derivative equal to zero.

RyanL.
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Find the derivative of f(x) and set it equal to zero. Solve for x.

RyanL.
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I thought it was the first derivative?


RyanL.
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Good point :D

bigworm
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So how exactly do I find the first derivative?

tomo
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have you had calculus?

RyanL.
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First of you know what a derivative is right?

bigworm
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No, im in algebra 2

RyanL.
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=.=

bigworm
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The way my teacher taught how to find the min and max is by using a calculator , but if there is an easier way by hand, I wanna know howw

amoodarya
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amoodarya
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this function is in odd degree so it has no max or min

bigworm
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How do I find the min and max using a calculator then?

amoodarya
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if the function was in even degree has a max or a min or both like that i drawdw:1358815524977:dw

tomo
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instead of f(x) use y. also what kind of calculator do you have?

bigworm
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ti83

bigworm
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so what should I do?

Action123
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minimum: min{f(x) = x^35 x^2+3 x+12} = 3 at x = 3
max: max{f(x) = x^35 x^2+3 x+12} = 337/27 at x = 1/3