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you might have seen a deleted post... it seems editing my post wouldn't work.
anyways, I found the answer, but I'm curious to know whether it's possible to find the answer for non integers?
thanks, zain
hey guys, need help again, bit of a similar question. the problem is:
"In a geometric series, the 3rd term in 45 and the sum of the first 7 terms is 2735.
Find the first term and common ratio r if r (is a part of all integers)"
I know that I need to set up the two equations like this:
I'm just not sure how to solve for them. unlike the last one this is a term and a sum, I'm having trouble finding r again. thanks dudes.
hi, I'd like to try
oh, that's makes a lot more sense, I never thought about it that way. thanks a lot sir/miss.
hey guys, I've been stuck on this question in my textbook for a little bit; I've checked online but it only gives me sequences, not sums.
my problem is: "In a geometric series, the sum of the first three terms is 304, and the sum of the first six terms is 1330. Find the sum of the first seven terms".
by using the sum of a geometric sequence formula, I've tried equating them both to zero and finding u_1, and then I get u_1 = (1026r - 1026) / (r^6 - r^3)
which gets pretty complicated to substitute. is there something I'm missing?
also, how do I use latex correctly? I read the stickied post and they should be like this <u_1> correct? not sure how to put in a code box. thanks.
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