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Mathematics 15 Online
OpenStudy (credmond):

Let f(x) = x^3-7x^2+5x-5. Find the open intervals on which f is concave up/down. Then determine the x-coordinates of all inflection points of f.

OpenStudy (luigi0210):

Do you know how to start it off?

OpenStudy (credmond):

Do you take the derivative?

OpenStudy (credmond):

the 1st derivative?

OpenStudy (credmond):

If so, I got 3x^2 -14x +5

OpenStudy (credmond):

Then I took the next second derivative and got 6x-14

OpenStudy (credmond):

and I don't know what to do next..

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