- #1

- 44

- 0

Attempt:

parametric r(t)= cos(t)i + sin(t)j 0<t<pi ds=root(1)dt

integrate from 0 to pi the function cost + 2sint, and i get -2.

correct answer is 4. i think im writing the parametric wrong or something. help?

- Thread starter xmflea
- Start date

- #1

- 44

- 0

Attempt:

parametric r(t)= cos(t)i + sin(t)j 0<t<pi ds=root(1)dt

integrate from 0 to pi the function cost + 2sint, and i get -2.

correct answer is 4. i think im writing the parametric wrong or something. help?

- #2

- 79

- 0

Think about your order of integration, where do you start and where do you end?

Now with that in mind, you should get 4.

(and actually I think you make some calculation mistakes, because the way you did it, you should get -4 instead of -2. Check your calculation.)

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