Question

i need help with geometric progression

Answer 1

the first term of a geometric progression is 81 and the fourth term is 24. find the common ratio of the progression.

Answer 2

you should know the general formula for a geoSeq for this.

Answer 3

can you tell me the formula pls??

Answer 4

i could, but that would defeat the purpose really.

Answer 5

if you have the material to study this, it should be in there. This is just an application of it

Answer 6

you might even have it in your head somplace, perhaps you can give me your best guess as to what you think the formula may be?

Answer 7

Er...

Answer 8

well, that is a formula related to geo sequences :) but thats a sum

i was thinking more along the lines of:\[a_n=a_1~r^{n-1}\]

Answer 9

if we solve this for "r" what does the formula look like then?

Answer 10

i just found it!! it is