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anonymous
 5 years ago
Can you help me with this patten?
its a triangle like this:
1 1
3 2 3
6 4 4 6
10 7 6 7 10
15 11 9 9 11 15
and its supposed to be a triangle, like pascal's or something.
I need to find a general statement for the (r+1)th element in the nth row.
anonymous
 5 years ago
Can you help me with this patten? its a triangle like this: 1 1 3 2 3 6 4 4 6 10 7 6 7 10 15 11 9 9 11 15 and its supposed to be a triangle, like pascal's or something. I need to find a general statement for the (r+1)th element in the nth row.

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So is the top line 1 1 ? And no line above that?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0if you can find a pattern without the 1s though, i can probably manipulate it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\frac{n(n+1)}{2}r(nr)\quad ,\quad r=0,\dots,n\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i know it says youre a lifesaver, but you really are a lifesaver. :) how did you find it?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Are you familiar with triangular numbers? It was presumably something based on them (see first element in each row), and it was just a question of finding what that variant was. Admittedly, I didn't do it, but I grew out of these type of problems a while ago.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay thank you. i just need to know because it was like an investigation for a precalc class where we need to find it and then explain how we found it. i actually got the first part on my own but i was having a hard time with the r(nr) part.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well the (rn) part kind of suggests itself because the last term is always equal to the first, but after that, yeah, just guesswork (as far as I can tell)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yes, that, unless you called it + r(rn)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah. thank you so much, i was mad my teacher gave this to us and made us figure it out by ourselves. you saved my life.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Haha, hardly (I didn't work it out)  but if you weren't getting me confused with the person who posted it and found my ramblings useful, then thanks! :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0well your ramblings were useful. both of you were.
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