- #1

- 92

- 1

## Homework Statement

i have this problem and need your help. I tried to solve the first 2 question but dont know ho to solve the third one

- Thread starter Pual Black
- Start date

- #1

- 92

- 1

i have this problem and need your help. I tried to solve the first 2 question but dont know ho to solve the third one

- #2

- 26

- 2

The answer to your first part is wrong just fyi. Think about the area under the curve of that line. Does it look like it's zero???

As is the second part. You used the upper bound of the integral as the value you subtracted, it should be the thing you subtract from.

And I'm not sure what the third part is asking. Is it asking for the integral on the line OA and the line OB, in which case it'd be zero, or is there something you didn't write down. How is it exactly written in the problem?

As is the second part. You used the upper bound of the integral as the value you subtracted, it should be the thing you subtract from.

And I'm not sure what the third part is asking. Is it asking for the integral on the line OA and the line OB, in which case it'd be zero, or is there something you didn't write down. How is it exactly written in the problem?

Last edited:

- #3

- 92

- 1

1- from OA ( straight line ) ##y=2x##

2- from OA ( arc ) ## y=2x^2 ##

3- the line OB

4- the line BA

- #4

HallsofIvy

Science Advisor

Homework Helper

- 41,833

- 961

If [itex]y= 2x[/itex], what is dy?

If [itex]y= 2x^2[/itex] what is dy?

I'm not clear on what "3- the line OB, 4- the line BA" is supposed to mean when initially the you had the single problem, "From OB to BA", which also makes no sense since you do not go "from" one line to another. I think that what you mean is that all these integrals are from O to A, the third problem being

If y= 0, what is dy? If x= 1, what is dx?

- #5

- 26

- 2

- #6

- 92

- 1

Maybe i shall use greens theorem??

Will it make sense??

Will it make sense??

- Last Post

- Replies
- 3

- Views
- 2K

- Last Post

- Replies
- 5

- Views
- 1K

- Last Post

- Replies
- 1

- Views
- 872

- Replies
- 10

- Views
- 2K

- Replies
- 0

- Views
- 861

- Last Post

- Replies
- 1

- Views
- 914

- Last Post

- Replies
- 4

- Views
- 1K

- Last Post

- Replies
- 3

- Views
- 7K

- Last Post

- Replies
- 3

- Views
- 734

- Last Post

- Replies
- 8

- Views
- 1K