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

What am I doing wrong?

1,644
2
1. Homework Statement

See Image

2. Homework Equations

See Image

3. The Attempt at a Solution

See Image
 

Attachments

Answers and Replies

275
2
You're right, it is a conservative field - thats the key to the solution.
I think you're trying to use path independence, which is also key, but try it another way.
you're looking for the integral of F; and F = grad f.... well... whats the integral of grad f?
 
206
0
Actually, I can't really see a problem. So...am I really just that rusty? What's the answer supposed to be?
 
HallsofIvy
Science Advisor
Homework Helper
41,734
893
The only thing you are doing wrong is that you have not finished the problem!

You have (9- 12+ 4)- (1/4+ 1- 1). Okay, what number is that?
 
1,644
2
The only thing you are doing wrong is that you have not finished the problem!

You have (9- 12+ 4)- (1/4+ 1- 1). Okay, what number is that?
Well, that answer is 3/4, but the answer in the back of the review has -27/4.
 
1,644
2
You're right, it is a conservative field - thats the key to the solution.
I think you're trying to use path independence, which is also key, but try it another way.
you're looking for the integral of F; and F = grad f.... well... whats the integral of grad f?
I have that written out.
 

Related Threads for: What am I doing wrong?

  • Last Post
Replies
2
Views
664
  • Last Post
Replies
5
Views
1K
  • Last Post
Replies
1
Views
882
  • Last Post
Replies
0
Views
1K
Replies
4
Views
747
Replies
4
Views
954
  • Last Post
Replies
4
Views
808
Top