Question

write the first five terms of a1=-5, a2=-1

Answer 1

what type of series is this? - if its arithmetic then common difference is 4
and the first 5 are -5, -1,3,7,11

Answer 2

geometric

Answer 3

thats different
- the common ratio is -1 / -5 = 1/5
so they are -5 , -1 , -5 * (1/5)^2 , -5 * (1/5)^3 , -5 * (1/5)^4

general form of a GP is

a, ar, ar^2, ar^3 .....

Answer 4

how do you get -5 and -1

Answer 5

- you gave them as the first two terms
a1 = -5 , a2 = -1

Answer 6

then I get 1/5 how do I get th eothers after that

Answer 7

-5 * 1/5 = -1
eat term is formed by multiplying previous one by 1/5

Answer 8

ohhh ok i got it so 1/25 is next

Answer 9

so 3rd term = a1 * r^2 = -5 *(1/5)^2 = -5 * 1/25 = -1/5

Answer 10

hay could you help me solve one more i would appreciate it

Answer 11

haven't got much time

Answer 12

find a8 for each arithmatic sequence a1=6 d=2 just what do I need to do

Answer 13

ok
a8 = a1 + 7d

Answer 14

and you get the answer

Answer 15

from that

Answer 16

yea

Answer 17

thanks

Answer 18

just plug in a1=6 and d = 2

Answer 19

ok thanks appreciate it