Thursday

January 29, 2015

January 29, 2015

Posted by **Anonymous** on Sunday, February 10, 2008 at 1:51am.

2. integral 0, pi/2 cot(theta) d(theta)

(a) state why the integral is improper or involves improper integral

(b) determine whether the integral converges or diverges

converges?

(c) evaluate the integral if it converges

CONFUSE: how would I know the integral converges or diverges without

evaluating the integral? I am not sure if I evaluated the integral correctly.

(a) infinite limit of integration

(b) diverges?

lim -1/(x^2+1) -oo, b = oo?

b->oo

(a) integrand has an infinity discontinuity at x=0

(b) diverges?

lim cos(theta)/sin(theta) d(theta)

b->oo

= lim ln(sin(theta)) d(theta) b, pi/2

b->oo

=-oo?

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