Question

Write the formula for the nth term of the sequence 12,9,6...

Answer 1

well what do you notice as the speciality in the terms above ?

Answer 2

i cant get it?

Answer 3

try ? see what is the relation between each consecutive term !

Answer 4

common difference of -3

Answer 5

:) well done !

Answer 6

:)

Answer 7

so that means this is a ________?

Answer 8

A.P

Answer 9

a(n)

Answer 10

\[a_n = a_1 + (n - 1)d\]

Answer 11

Very good :)

Answer 12

Arithmetic Progression

Answer 13

do you know formula for nth term of an A.P ?

Answer 14

yes the one that @ParthKohli wrote above

Answer 15

use it then !

Answer 16

Tn = 15n-3n

Answer 17

sorry 15-3n

Answer 18

right!!

Answer 19

thanks :)

Answer 20

yw : )