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Algebra 22 Online
OpenStudy (moirrraaa):

Which of the graphs below represent the function f(x) = x^3 − 5x^2 + 2x + 8?

OpenStudy (moirrraaa):

OpenStudy (anonymous):

Hey! What do you think?

OpenStudy (moirrraaa):

I think that it is either the second or last graph but I'm not sure which

OpenStudy (anonymous):

okay, have you tried one more condition? try f(2) to see what you get...

OpenStudy (alones.):

https://www.desmos.com/ plug it in

OpenStudy (anonymous):

first of all find y for x is infinites

OpenStudy (anonymous):

+ + - - so just 1&2 are correct

OpenStudy (dani_rose):

Im just gonna guess that it's the 2nd one

OpenStudy (dani_rose):

When you graph it it looks just like the second graph

OpenStudy (anonymous):

and then you can use derivative of function of some special points to reach the answer

OpenStudy (anonymous):

3x2-10x+2=0 has just two positive answers so...!

OpenStudy (anonymous):

second figure is the answer

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