anonymous
  • anonymous
HELP: Determine the values of where the tangent line is horizontal for the function:
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
zzr0ck3r
  • zzr0ck3r
take the derivative, and set it equal to zero
anonymous
  • anonymous
then plug into original function?

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zzr0ck3r
  • zzr0ck3r
nope, it wants x values, so solve for = 0, and that's your answer
anonymous
  • anonymous
oh ok.
zzr0ck3r
  • zzr0ck3r
example f(x) = x^2 + 2x f'(x) = 2x+2 2x+2 = 0 x = -1 so f(x) has horizontal tangent at x = -1
anonymous
  • anonymous
@zzr0ck3r thank you=]
zzr0ck3r
  • zzr0ck3r
np
zzr0ck3r
  • zzr0ck3r
I will note that in most cases when they say "value" that implies y, but in this situation they said "x value".
anonymous
  • anonymous
to take the derivative: we must use the power and quotient rule for this question right?
anonymous
  • anonymous
i missed up on something, hats not coming out right..

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