anonymous
  • anonymous
help please ? find the critical numbers of f,describe the open intervals on which f is increasing or decreasing locate all relative extrema
Mathematics
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schrodinger
  • schrodinger
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anonymous
  • anonymous
calculus...? whats the equation
anonymous
  • anonymous
|dw:1363827249708:dw|
anonymous
  • anonymous
critical numbers are when derivative equals zero....right?

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anonymous
  • anonymous
@Best_Mathematician yes
anonymous
  • anonymous
so the derivative is |dw:1363827381385:dw|
anonymous
  • anonymous
set it equal to zero and find value of x
anonymous
  • anonymous
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 \((-4,\infty)\)
Lena772
  • Lena772
@satellite73 is there any relative extrema here?

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