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#1 Help Me ! » can this be cancelled down? » 2007-03-01 09:18:26
- rainbow x
- Replies: 3
is it possible for the following formula to be cancelled down? and if it cannot be cancelled down, why is that?
hope you can understand it, i drew it in paint lol.
thx for any help! =]
#2 Re: Help Me ! » help with quadratic sequences please. » 2007-02-27 03:23:05
mhmm, makes sense that it would be cubic, im still not too sure how to go about working it out though =S
#3 Help Me ! » help with quadratic sequences please. » 2007-02-27 02:55:10
- rainbow x
- Replies: 6
if anyone could help me with this, it would be very much appreciated, thankyou! 
how do i work out the nth term in the following sequence? could someone explain it to me please.
11, 44, 110, 220 <--SEQUENCE
..+33 +66 +110 <-- 1st DIFFERENCE
....+33 +44 <-- 2nd DIFFERENCE
.......+11 <-- 3rd DIFFERENCE (constant)
im stuck cos ive learnt that to work out the nth term for quadratic sequences, the second difference has to be a constant, but here, the third difference is a constant .
does that make sense?
thnks for any help =]
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