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Author Topic: sequences  (Read 2778 times)

Offline vids

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sequences
« on: May 17, 2009, 04:20:20 pm »
hey cn any1 tell m d formulae to find out d nth term
please nidhi help
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Offline vids

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Re: sequences
« Reply #1 on: May 17, 2009, 04:25:22 pm »
i just knw dis1
a+(n-1)d
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Offline EGY_Voldmort

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Re: sequences
« Reply #2 on: May 17, 2009, 04:31:12 pm »
Un = a+(n-1)d

n : order
a : 1st number
d : difference
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Offline junky demon

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  • I wish to see this in real-aurora borealis
Re: sequences
« Reply #3 on: May 17, 2009, 04:31:41 pm »
for eg.if the no.z r 1,4,9,16...
then yu keep findin the diff. until it reaches a single no. btween ol..tht is for the first one:3,second:5,third:7 then the sme thin amongst the three no.z..wen lastly ull reach to 1..therefore  1n and raise to the no. of tyms u found the diff.exclude the tym wen u gt 1...so the ans is 1n^2...hope this helps and there is no easy way except the above formula for help at sequences..:D
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JD'

Offline vids

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Re: sequences
« Reply #4 on: May 17, 2009, 04:32:04 pm »
if d difference is not same den??
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nid404

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Re: sequences
« Reply #5 on: May 17, 2009, 04:37:53 pm »
i thought i told u the other day at school.
it's a+(n-1)d+(n-1)(n-2)c

a=first term
c= final difference
d=the difference between values of first and second term
 
got it ?
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Offline vids

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Re: sequences
« Reply #6 on: May 17, 2009, 04:39:41 pm »
Thanks..i forgot it
nyways...getting tensed
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nid404

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Re: sequences
« Reply #7 on: May 17, 2009, 04:40:40 pm »
relax...no1's eatin u up. anyways i gotta go.
Good Night
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Offline vids

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Re: sequences
« Reply #8 on: May 17, 2009, 04:41:31 pm »
night
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Offline EGY_Voldmort

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Re: sequences
« Reply #9 on: May 17, 2009, 04:45:49 pm »
Thanks for addition and wish us all good luck  :D
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Offline vids

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Re: sequences
« Reply #10 on: May 17, 2009, 04:47:31 pm »
al d best guys...
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Offline AN10

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Re: sequences
« Reply #11 on: May 17, 2009, 04:57:21 pm »
hey can anybody tell me wht does c mean....final difference of wht??
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“Faith is taking the first step even when you don't see the whole staircase.”

Offline EGY_Voldmort

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Re: sequences
« Reply #12 on: May 17, 2009, 05:02:03 pm »
yup final difference
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Offline AN10

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Re: sequences
« Reply #13 on: May 17, 2009, 05:05:16 pm »
no i meant different of which two values ???
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“Faith is taking the first step even when you don't see the whole staircase.”

zara

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Re: sequences
« Reply #14 on: May 17, 2009, 05:09:50 pm »
"c" means difference of the difference
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