• Support PF! Buy your school textbooks, materials and every day products Here!

Stationary points

  • Thread starter Sheneron
  • Start date
  • #1
360
0
[SOLVED] Stationary points

Homework Statement


Does the funtion g(x) = x + sin(x) have any stationary points on the interval [-5,5], if so where?

The Attempt at a Solution


Stationary points is where there is a 0 slope so here is what I did. Just need someone to check to see if this is right.

g'(x) = 1 + cos(x)
cos(x) = -1

So for the answer I got two stationary points at pi and -pi.
 

Answers and Replies

  • #2
exk
119
0
Looks fine to me. Note that pi and -pi are in fact in your interval.
 
  • #3
360
0
yes, thanks.
 

Related Threads for: Stationary points

  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
9
Views
1K
  • Last Post
Replies
6
Views
971
  • Last Post
Replies
16
Views
2K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
13
Views
2K
  • Last Post
Replies
9
Views
4K
Top