Find all extrema in the interval if y=x + sin x.

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- Jul 30th 2007, 05:00 AMSamanthaextremum
Find all extrema in the interval if y=x + sin x.

- Jul 30th 2007, 05:15 AMgalactus
First, find your derivative.

What solutions to this fall in your interval?.

Here's a graph. They always help. - Jul 30th 2007, 05:46 AMSamantha
is it

a)

b) (0,0)

c)

d) (0,0)

e) None of these - Jul 30th 2007, 05:54 AMCaptainBlack
- Jul 30th 2007, 06:04 AMSamantha
- Jul 30th 2007, 06:07 AMgalactus
I'm sorry to say, you should see your professor if you're that lost.

- Jul 31st 2007, 12:40 PMSamantha
That's how I did it and understand it. Plz help

y=x+sinx

y(prime)=1+cosx

cosx=-1

x=

so the answer it - Jul 31st 2007, 01:41 PMtopsquark
- Aug 1st 2007, 05:18 AMSamantha
- Aug 1st 2007, 05:31 AMtopsquark