Question

how to find explicit formula for a sequence
especially "the quadratic" ones

Answer 1

i interested in approaches that can be followed! :)

Answer 2

i'm*

Answer 3

difference tiers comes to mind

Answer 4

^

Answer 5

the discrete version of derivative, finding the slope defined between successsive terms until a constant terms is found?

Answer 6

subtracting next from previous you mean to see the pattern

Answer 7

yes

Answer 8

a quadratic will have 2 sets of subtractions, with any luck

Answer 9

hmm i see so besically we can employ the slope approach

Answer 10

correct

Answer 11

derivatives!

Answer 12

ok thanks :)

Answer 13

youre welcome