Got any leads on calculating:

:

Sorry for the bad latex, but I am trying you know.

Printable View

- Oct 8th 2005, 03:40 AMa4sweA limit
Got any leads on calculating:

:

Sorry for the bad latex, but I am trying you know. - Oct 8th 2005, 05:23 AMticbol
Lim(X-->pi/2)[cotX / (2x -pi)]

= cot(pi/2) / 2*pi/2 -pi

= 0/0

Indeterminate.

Use the L'Hopital's Rule: Lim(x->a)[f(x)/g(x)] = Lim(x->a)[f'(x)/g'(x)].

= Lim(X->pi/2)[-csc^2(X) / 2

= -csc^2(pi/2) / 2

= -[1/sin(pi/2)]^2 /2

= -[1/1]^2 / 2

= -1/2 ------------answer. - Oct 8th 2005, 05:35 AMa4swe
That's true, thanks.

But is there a (there is) way to solve it without using L'Hopital's Rule? - Nov 6th 2005, 05:15 PMJamesonQuote:

Originally Posted by**a4swe**

And I don't see a way to do this without L'Hopitals either. - Nov 11th 2005, 06:42 PMhpe
Using the substitution ,we get

which becomes .

The less L'Hopital, the better.