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# Some Maths problems watch

1. There are clearly people who are much more mathematically able than me on here, nevertheless, might be fun to exchange problems.

Something interesting from a P4 paper today, differentiate x.arcsin x, hence integrate arcsin x.
2. (Original post by fishpaste)
There are clearly people who are much more mathematically able than me on here, nevertheless, might be fun to exchange problems.

Something interesting from a P4 paper today, differentiate x.arcsin x, hence integrate arcsin x.
3. (Original post by elpaw)
Yes, because it can be done by a 1 * arcsin x dx integration, but this way is more interesting.
4. (Original post by fishpaste)
There are clearly people who are much more mathematically able than me on here, nevertheless, might be fun to exchange problems.

Something interesting from a P4 paper today, differentiate x.arcsin x, hence integrate arcsin x.
Here's an interesting one:

In a group of 6 people, show that there must be 3 people who know each other or don't know each other.
5. (Original post by theone)
Here's an interesting one:

In a group of 6 people, show that there must be 3 people who know each other or don't know each other.
Is that an "at least" 3 people, or exactly 3 people?
6. (Original post by theone)
Here's an interesting one:

In a group of 6 people, show that there must be 3 people who know each other or don't know each other.

What is that avatar? it makes you look childish
7. (Original post by 2776)

What is that avatar? it makes you look childish
I'm on a lookout for a better avatar at the moment thats actually 50x50!

And it's no such a simple problem, i mean exactly 3 people btw.
8. (Original post by fishpaste)
There are clearly people who are much more mathematically able than me on here, nevertheless, might be fun to exchange problems.

Something interesting from a P4 paper today, differentiate x.arcsin x, hence integrate arcsin x.
9. (Original post by elpaw)
doesnt work
10. (Original post by theone)
I'm on a lookout for a better avatar at the moment thats actually 50x50!

And it's no such a simple problem, i mean exactly 3 people btw.
make the avatar more manly, it looks like a girl if you scrunch your eyes up
11. (Original post by 2776)
make the avatar more manly, it looks like a girl if you scrunch your eyes up
Happy?
12. (Original post by 2776)
doesnt work
sorry, try http://users.ox.ac.uk/~chri1957/calculus.jpg
13. (Original post by elpaw)
sorry, try http://users.ox.ac.uk/~chri1957/calculus.jpg
you keen keen person
14. (Original post by theone)
Happy?
Its pretty good,
15. (Original post by 2776)
you keen keen person
what do you mean by that? you're not going to turn into LH?
16. (Original post by 2776)
Its pretty good,
Thank you
17. (Original post by theone)
Thank you
egan will like you.
18. (Original post by elpaw)
what do you mean by that? you're not going to turn into LH?
whats this about LH?I dont quite get the connection
19. (Original post by 2776)
whats this about LH?I dont quite get the connection
20. (Original post by elpaw)
Yes but this is different. You have actually took the time to write something down, scan it, upload it, then post it here. Too much work.

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