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haleyelizabeth2017
 one year ago
For which interval(s) is f(x)=3x^316x+2 increasing or decreasing?
haleyelizabeth2017
 one year ago
For which interval(s) is f(x)=3x^316x+2 increasing or decreasing?

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freckles
 one year ago
Best ResponseYou've already chosen the best response.0You could find f'(x). Then find where f'>0 (this is where f is increasing) Then find where f'<0 (this is where f is decreasing)

Koikkara
 one year ago
Best ResponseYou've already chosen the best response.0dw:1443816836547:dw Graph comes like this.. lol and Hai...

Koikkara
 one year ago
Best ResponseYou've already chosen the best response.0@haleyelizabeth2017 Which means it's increasing...lol

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0lol I have to find the intervals...

freckles
 one year ago
Best ResponseYou've already chosen the best response.0@haleyelizabeth2017 have you found the critical numbers yet?

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0No, still working on it.

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0Do I set f(x) to 0 and solve for x?

freckles
 one year ago
Best ResponseYou've already chosen the best response.0To find critical numbers you solve f'(x)=0 for x.

freckles
 one year ago
Best ResponseYou've already chosen the best response.0do you know any calculus?

freckles
 one year ago
Best ResponseYou've already chosen the best response.0or you suppose to graph it in your calculator and say where the function is increasing or decreasing?

haleyelizabeth2017
 one year ago
Best ResponseYou've already chosen the best response.0I do not know any calculus lol...

freckles
 one year ago
Best ResponseYou've already chosen the best response.0Well how do they expect you to answer this? Calculator right?

freckles
 one year ago
Best ResponseYou've already chosen the best response.0dw:1443817293708:dw we need to find these numbers a and b

freckles
 one year ago
Best ResponseYou've already chosen the best response.0read the function from left to right

freckles
 one year ago
Best ResponseYou've already chosen the best response.0the function is rising on (inf,a) then falling on (a,b) then rising again on (b,inf)

freckles
 one year ago
Best ResponseYou've already chosen the best response.0all you have to do now is find those numbers a and b also called the turning points of the function using your calculator

freckles
 one year ago
Best ResponseYou've already chosen the best response.0also let me put some numbers on my graph because I don't want you to think that is y=0... dw:1443817470752:dw it was just meant to be a rough picture anyways

freckles
 one year ago
Best ResponseYou've already chosen the best response.0those equations aren't even that important (talking about the x=0 and the y=2)
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