Question

Evaluate the integral 1/sqrt[1-x^2], x= 1/2 to sqrt(3)/2

Answer 1

\[\int\limits_{1/2}^{\sqrt{3}/2} 1/\sqrt{1-x^2} d\]

Answer 2

arcsin(x). That's a inverse trig. integral.

Answer 3

Then evaluate, of course :-)

Answer 4

let u=arcsin(x), dv=dx, ,, find du..and v..

Answer 5

ty bmp- i woulda go for trig sub... would be a mess lol-

Answer 6

u would or wouldnt use inverse trig.??

Answer 7

i would if bmp didnt mention that.== it lot easier to use arcsin(x)

Answer 8

@sam30317 You should remember some main integrals: arctan, arcsin, arccos (albeit this is rare), to avoid doing extra work. :-)
@iHelp Sure thing, :-). These kind of problem are generally to catch people offguard.

Answer 9

This* kind of problems, damn my "grammer" is bad today.

Answer 10

nvm that quest

Answer 11

rofl, i would thought that was correct grammer--- i HATE ENGLISH =(

Answer 12

I thought i did memorize them!!! Teachers never really give u examples or quiz u on this stuff. But on the test, they;re everywhere!

would the answer be pi/6?

Answer 13

no offense but 10 year or English, i still cant learn proper grammar.. it a pain

Answer 14

Americans and Brits dont know their english that well either. Dont worry, its idiotic to us too

Answer 15

Yup, that's correct @sam30317 .
@iHelp None taken, I am not a native English speaker, haha.

Answer 16

**Gasp** Omg, really??? Muah ha ha ha!

Answer 17

btw sam, i have faith in u =) dont let us down

Answer 18

lmao!! I'd rather you have faith in your deity and pray for me. I need allll the help i can get

Answer 19

ill pray for us*

Answer 20

Haha, lets do that. Ive been praying for weeks now.

Answer 21

That's right. i have 3 in one day. I WILL RAPE THOSE PAPERS DOWN. amen.

Answer 22

Omg, thats hilarious, lol!!!!! I need to get off here, haha