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Ephilo
help please ? find the critical numbers of f,describe the open intervals on which f is increasing or decreasing locate all relative extrema
calculus...? whats the equation
critical numbers are when derivative equals zero....right?
so the derivative is |dw:1363827381385:dw|
set it equal to zero and find value of x
not to butt in, but you certainly don't need calculus for this it is a quadratic, therefore a parabola the leading coefficient is positive, so it open up the first coordinate of the vertex is \(-4\) so it decrease on \((-\infty, -4)\) and increases on \((-4,\infty)\)
@satellite73 is there any relative extrema here?