anonymous
  • anonymous
???
Mathematics
jamiebookeater
  • jamiebookeater
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diamondboy
  • diamondboy
Hi
diamondboy
  • diamondboy
Do u have a text?
anonymous
  • anonymous
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diamondboy
  • diamondboy
like a text book
anonymous
  • anonymous
Its online but I have the answer choices
diamondboy
  • diamondboy
ok then since u cant check it
diamondboy
  • diamondboy
f(-3) must equal f(1), it must be differentiable ion the interval (-3,1) and continuous on the interval [-3,1]
zzr0ck3r
  • zzr0ck3r
Now take the derivative and set it equal to \(0\).
anonymous
  • anonymous
Thank you! When I derive it I get 2x+2=0
anonymous
  • anonymous
Then x=-1
zzr0ck3r
  • zzr0ck3r
correct
zzr0ck3r
  • zzr0ck3r
They are not showing you why rolls theorem is important. For this problem you could have simply took the derivative and set it equal to 0 and then saw that -1 was indeed between -3 and 1. The real reason for Roll's theorem is sometimes it is not so easy to take the derivative of the function. But we need to know if it becomes zero, and we then can use Roll's theorem without taking the derivative
anonymous
  • anonymous
Oooooo okay
anonymous
  • anonymous
Thank you both for your help!

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