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OpenStudy (anonymous):
Find all of the possible inflection points for f(x) = x4 + 2x3 – 2x.
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OpenStudy (amistre64):
x^4 means that it has at least 2 inflections
OpenStudy (amistre64):
f' = 4x^3 +6x^2 -2 f'' = 12x^2 +12x 12x(x+1) inflections should be at 0 and -1 at most
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