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Mathematics 18 Online
OpenStudy (anonymous):

???

OpenStudy (diamondboy):

Hi

OpenStudy (diamondboy):

Do u have a text?

OpenStudy (anonymous):

Like answers?

OpenStudy (diamondboy):

like a text book

OpenStudy (anonymous):

Its online but I have the answer choices

OpenStudy (diamondboy):

ok then since u cant check it

OpenStudy (diamondboy):

f(-3) must equal f(1), it must be differentiable ion the interval (-3,1) and continuous on the interval [-3,1]

OpenStudy (zzr0ck3r):

Now take the derivative and set it equal to \(0\).

OpenStudy (anonymous):

Thank you! When I derive it I get 2x+2=0

OpenStudy (anonymous):

Then x=-1

OpenStudy (zzr0ck3r):

correct

OpenStudy (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

OpenStudy (anonymous):

Oooooo okay

OpenStudy (anonymous):

Thank you both for your help!

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