anonymous
  • anonymous
Let f be the function with derivative given by f'(x)=x^2 - 2/x.Determine tje intervals on which f is decreasing.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
find where f'(x) = 0. x² - 2/x = 0 x = 3sqrt(2) now plug in 2 values - greater than and less than 3sqrt(2) which ever is negative, is the decreasing one.
anonymous
  • anonymous
x = 0 is also a critical number.
anonymous
  • anonymous
O.o howd you get 0?

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bahrom7893
  • bahrom7893
banshee -2/x
bahrom7893
  • bahrom7893
u need where the function doesn't exist too...
anonymous
  • anonymous
oh rightttt doesnt exist xD touche!
bahrom7893
  • bahrom7893
lol review ur calc...
anonymous
  • anonymous
; )
anonymous
  • anonymous
Now im confuse somthing dnt add up

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