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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.
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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
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OpenStudy (credmond):
and I don't know what to do next..
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