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

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tomo Group TitleBest ResponseYou've already chosen the best response.0
set the second derivative equal to zero.
 one year ago

RyanL. Group TitleBest ResponseYou've already chosen the best response.0
Find the derivative of f(x) and set it equal to zero. Solve for x.
 one year ago

RyanL. Group TitleBest ResponseYou've already chosen the best response.0
I thought it was the first derivative?
 one year ago

tomo Group TitleBest ResponseYou've already chosen the best response.0
yeah, you're right. the second derivative is to find if it is a min or a max. http://en.wikipedia.org/wiki/Second_derivative
 one year ago

RyanL. Group TitleBest ResponseYou've already chosen the best response.0
Good point :D
 one year ago

bigworm Group TitleBest ResponseYou've already chosen the best response.0
So how exactly do I find the first derivative?
 one year ago

tomo Group TitleBest ResponseYou've already chosen the best response.0
have you had calculus?
 one year ago

RyanL. Group TitleBest ResponseYou've already chosen the best response.0
First of you know what a derivative is right?
 one year ago

bigworm Group TitleBest ResponseYou've already chosen the best response.0
No, im in algebra 2
 one year ago

bigworm Group TitleBest ResponseYou've already chosen the best response.0
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
 one year ago

amoodarya Group TitleBest ResponseYou've already chosen the best response.1
this function is in odd degree so it has no max or min
 one year ago

bigworm Group TitleBest ResponseYou've already chosen the best response.0
How do I find the min and max using a calculator then?
 one year ago

amoodarya Group TitleBest ResponseYou've already chosen the best response.1
if the function was in even degree has a max or a min or both like that i drawdw:1358815524977:dw
 one year ago

tomo Group TitleBest ResponseYou've already chosen the best response.0
instead of f(x) use y. also what kind of calculator do you have?
 one year ago

bigworm Group TitleBest ResponseYou've already chosen the best response.0
so what should I do?
 one year ago

Action123 Group TitleBest ResponseYou've already chosen the best response.0
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
 one year ago
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