anonymous
  • anonymous
i...just....cant....do it. lim x->4 of (4x-x^2)/(2-sqrt(x))
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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campbell_st
  • campbell_st
I think you'll find the limit is undefined... no matter what you do the result will be a zero in the denominator.
anonymous
  • anonymous
erm. when i put it in a limit calculator i get 16
anonymous
  • anonymous
im @ \[\lim_{x \rightarrow 4} (4x-x^2)/(2-\sqrt{x)} * ((2+\sqrt{x})/(2+\sqrt{x}))\]

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anonymous
  • anonymous
= (8x-2x^2+4xrt(x)-x^2rt(x)) / 2-x
anonymous
  • anonymous
|dw:1327396343921:dw|
anonymous
  • anonymous
sorry bud i can't read the right side... :(
anonymous
  • anonymous
|dw:1327385788117:dw|
anonymous
  • anonymous
|dw:1327396684752:dw|
anonymous
  • anonymous
L`hopital rules
anonymous
  • anonymous
see, i get that, but that can't be the route because the book hasn't even gone over that yet, or derivatives.
anonymous
  • anonymous
ok I found it
anonymous
  • anonymous
|dw:1327397244597:dw|
anonymous
  • anonymous
|dw:1327397339884:dw|

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