Posted by JM on Sunday, February 12, 2012 at 10:31pm.
On what interval is the function f(x)=x^26x+8 is increasing?

Calculus  Anonymous, Monday, February 13, 2012 at 10:40am
come on. even without calculus you know that the vertex is at (3,1).
With calculus, f' = 2x6, and f is increasing where f' > 0
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