Question
4,9,x,37 is a quadratic sequence (a)show that x=20 (b)determine the nth term of the sequence thanks in advance
Answers
Steve
quadratic sequences will have linear 1st differences and constant 2nd differences.
The 1st differences here are 5,x-9,37-x
The 2nd differences are x-14,46-2x
If x=20, that makes the 1sts: 5,11,17
and the 2nds 6,6
which is consistent.
I expect you can determine the nth term all right...
The 1st differences here are 5,x-9,37-x
The 2nd differences are x-14,46-2x
If x=20, that makes the 1sts: 5,11,17
and the 2nds 6,6
which is consistent.
I expect you can determine the nth term all right...
Basetsana
4du