Question

what was the nth formula again, thanks

Answer 1

Of a geometric sequence or arithmetic sequence?

Answer 2

I remember it's like n something and then (n-1)...

Answer 3

Arithmetic Sequence:
\[a _{n} = a _{1} + (n - 1)d\]

Answer 4

I mean the other equation, the easiest one

Answer 5

Geometric Sequence:
\[a _{n} = a _{1} \times r ^{n - 1}\]

Answer 6

getting more complicated, it's a two step one, it's like something you wrote in the first one... thanks

Answer 7

So its for a Arithmetic Sequence OR Geometric Sequence?

Answer 8

yup

Answer 9

out of interest what's a1 and a2

Answer 10

? OR ?

Answer 11

I never said \[a _{2}\]

Answer 12

is a1 the pattern or starting no.

Answer 13

a1 is the first term.

Answer 14

oh thank you very much, you solved me q

Answer 15

d is the common ratio.

r is the common ratio.

Answer 16

d is the common difference.

Answer 17

oops yeah soorrry its was a typo :/

Answer 18

thnx @ParthKohli :D