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help with nth terms mathmatics?
Question
The nth term of a sequence is given by 3n^ +2n
Write down the first 3 terms
simple explanations please
4 Answers
- 9 years agoFavorite Answer
what's the nth term given as? It aint that clear. However, this is how to go about it.
For the first term, n=1. So put 1 in place of n and solve to get the first term.
For the second and third terms , n=2 and n=3 respectively so you put 2 and 3 in place of n and solve to get the second and third terms of the sequence as well.
- Anonymous9 years ago
n=where abouts the number is in the sequence
the 1st number in the sequence means that n=1
the 2nd number in the sequence means that n=2
the 3rd number in the sequence means that n=3
and so on for infinity.
So the first three terms?
the 1st term n would be 1, because it is the 1st number in the sequence, thus
3x1quared=3 + 2x1=5 , this is because i substituted n for 1
2nd term means n would be 2, so substitute n for 2
3x2 squared=12 + 2x2=16
the 3rd term, n would be 3
3x3 squared=27 + 2x3=33
3x3squared=27 as with the rules of BIDMAS, you do indices first
- Anonymous7 years ago
bhoo