anonymous
  • anonymous
find the vertex of y=x^2+16x+64
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Use the equation to find the axis of symmetry. \[x=\frac{ -b }{ 2a }\]
Goten77
  • Goten77
i would do 1st derivative test
anonymous
  • anonymous
Once you've done that, substitute the x-value into the equation to find y.

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anonymous
  • anonymous
okayyyy thanks guysss
anonymous
  • anonymous
Yeah 1st derivative test to find the vertex. very smart....not. I don't think a question like this would require such thing.
Goten77
  • Goten77
isnt the vertex just where the graph goes from increasing to decreasing.... or decreasing to increasing?
Goten77
  • Goten77
so ye its minimum or maximum
anonymous
  • anonymous
@Goten77 Stop waffling around.
anonymous
  • anonymous
All you need for this question is finding the axis of symmetry and then subbing that value into the equation to find y.
anonymous
  • anonymous
You're overcomplicating a simple question.
Goten77
  • Goten77
either way takes a short time... but if he showed his teacher the calculus way... ied give him extra credit XDDDDDDDDDDD

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