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

What does it mean if you get 0 for improper

  • Thread starter Jbreezy
  • Start date
  • #1
582
0

Homework Statement



Question ∫ secx^2 dx from 0 to ∏ I get tanx and evaluate it using limits
lim tan(pi) - lim(tan(0)) I get 0 for both. What does it mean.

Homework Equations





The Attempt at a Solution




The integral doesn't converge? I know it doesn't but what does 0 mean. Maybe I did something wrong.
 

Answers and Replies

  • #2
33,503
5,191

Homework Statement



Question ∫ secx^2 dx from 0 to ∏ I get tanx and evaluate it using limits
lim tan(pi) - lim(tan(0)) I get 0 for both. What does it mean.

Homework Equations





The Attempt at a Solution




The integral doesn't converge? I know it doesn't but what does 0 mean. Maybe I did something wrong.
The integrand is undefined at x = ##\pi/2##, which makes the integral an improper one. You can't just blithely integrate across a discontinuity.
 
  • #3
582
0
Man! OK I know how to fix it I should graph first always with these.
 

Related Threads on What does it mean if you get 0 for improper

  • Last Post
Replies
3
Views
1K
Replies
13
Views
540
Replies
5
Views
1K
Replies
2
Views
794
Replies
3
Views
1K
Replies
5
Views
299
Replies
2
Views
383
  • Last Post
Replies
6
Views
2K
Replies
7
Views
2K
  • Last Post
Replies
1
Views
600
Top