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# Maths Challenge... watch

1. (Original post by Revelation)
isnt that division by 0?
no, (a/b) represent the upper and lower limits of the preceeding integral.
2. (Original post by mik1a)
Evaluate ∫(1/0)∫(z/0)∫(√[1-y²-z²]/-½√[1-y²-z²]) x³ dx dy dz.

If someone does this I'll be impressed.
Hmm, you have,

(√[1-y²-z²]/-½√[1-y²-z²])

isn't that just,

(1/-½)

Oh damn, those were supposed to be the limits !
3. Is the value of the triple integral 13/384 ? I have just done a load of alegbra and come out with this value but it took so long that I couldn't be bothered to check it.
4. (Original post by mikesgt2)
Is the value of the triple integral 13/384 ? I have just done a load of alegbra and come out with this value but it took so long that I couldn't be bothered to check it.
Yeah, that's right... that's pretty amazing.
5. (Original post by mik1a)
Yeah, that's right... that's pretty amazing.
I just gottit too

Once I figured out the limits
6. Did anyone think that when you were asking her these questions she could be looking up the net to find the answers and not really be that clever after all.

And if you were 18 in april that would explain y you r soo clever cause you must have been held back a few years. If u r only doing ur GCSE's now.
7. (Original post by Fermat)
I just gottit too

Once I figured out the limits
Pardon my ignorance, but how do you evaluate multiple integrals? do you only integrate over the 'innermost' variable, keeping others constant, eg if you have INT INT INT f(x,y,z) dx dy dz do you integrate first with respect to x treating y and z as constant, then wrt y keeping x and z constant etc.
8. (Original post by It'sPhil...)
Pardon my ignorance, but how do you evaluate multiple integrals? do you only integrate over the 'innermost' variable, keeping others constant, eg if you have INT INT INT f(x,y,z) dx dy dz do you integrate first with respect to x treating y and z as constant, then wrt y keeping x and z constant etc.
Exactly!
Providing your not doing multiple partial integration, then do just like you said. When integrating wrt x then treat the y and z variables as consts, etc,
9. Ahhh, you go away for 5 days and you miss all the fun, drat!
10. What's the point in asking all theese questions that can be found after about 10 minutes on google?

Besides, I'd guess this was some kind of a wind up, as I seriously doubt anyone could be so hilariously ignorant.

If however, this person was serious, then that would be pretty pathetic, because, if she is so clever, so "naturally gifted", *snigger* then she whouldn't have to log on to an internet message board in an attempt to try and validate her existence, instead, she would've actually achieved something.
11. (Original post by Babyshambles)
What's the point in asking all theese questions that can be found after about 10 minutes on google?

Besides, I'd guess this was some kind of a wind up, as I seriously doubt anyone could be so hilariously ignorant.

If however, this person was serious, then that would be pretty pathetic, because, if she is so clever, so "naturally gifted", *snigger* then she whouldn't have to log on to an internet message board in an attempt to try and validate her existence, instead, she would've actually achieved something.
Solomon. :P
12. You want a challenge....

http://www.highiqsociety.org/noflash...rs/iqtests.htm

Try the test for exceptional intelligence.

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