hey,

im doing some nth term rule homework and i understand the concept but i cant work out what the rules are for these sequences. can someone help? they are only 13 year old level and shouldnt be hard but i suck at math

1x3, 2x4, 3x5...

1/3, 1/4, 1/5, 1/6....

11, 8, 2 -4,....

3, 10, 29, 66.....

the sequences all start with the first term and i need to come up with an algebraic expression so i could find any term in the sequence.
ANY HELP IS MUCH APPRECIATED!!!

THANKS!
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nth?
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n*(n+2) might be the first one, i'm not very good at math either

2nd one 1/(2+n)
Last edited by icaneatcatfood at Jan 29, 2007,
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1) n x (n+2)
2)1/(n+2)
3)
4) n^3 + 1
Last edited by rfleury at Jan 29, 2007,
Quote by Tok
hey,

im doing some nth term rule homework and i understand the concept but i cant work out what the rules are for these sequences. can someone help? they are only 13 year old level and shouldnt be hard but i suck at math

1)1x3, 2x4, 3x5...

2)1/3, 1/4, 1/5, 1/6....

3)11, 8, 2 -4,....

4)3, 10, 29, 66.....

the sequences all start with the first term and i need to come up with an algebraic expression so i could find any term in the sequence.
ANY HELP IS MUCH APPRECIATED!!!

THANKS!

2) 1/(n+2)
4)n^3 + 2

Can't be bothered to figure out the rest.
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great thanks!
Member #29 of the Fender Armada. Pm Arlabester...
Co-Founder of the UG Hippie Club! PM me or Blynd_Snyper to join!

My Gear:
Fender Highway 1 Tele
Fender Blues Junior Amp
Korg Multi effects pedal
Peavey Millenium Bass
Peavey Bass Amp
for 3), are you sure the third number's two? if it's supposed to be a 3 then the sequence is

12 - (n^2)
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