the sum of the first 5 terms of a geometric series is 77 and the sum of the next 5 terms is -2464. find the 4th term of the sequence
Erm.. got that from a friend.. tried a few things, but it didn't work out... help anyone?
Thanks.
Erm.. got that from a friend.. tried a few things, but it didn't work out... help anyone?
Thanks.