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geerky42 (geerky42):
What are values of x for which the graph of y = x³ - 6x² is concave downward?
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OpenStudy (anonymous):
\[f^{''}(x)>0\]
geerky42 (geerky42):
So... x < 2 ?
geerky42 (geerky42):
@Jonask
OpenStudy (anonymous):
sry \[f^{''}<0\] \[6x-12<0\]
OpenStudy (anonymous):
yes x<2
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