Will the real TeeEm please stand up!

Sorry, i'm confusing myself in the wording of the question. when it says the 'ratio of the first 5 terms' does that mean a(a+ar+ar^2+ar^3+ar^4)=49 or (a+ar+ar^2+ar^3+ar^4)^2=49. Sorry i'm just not getting anywhere with this lol, where am i going wrong?

Sorry, i'm confusing myself in the wording of the question. when it says the 'ratio of the first 5 terms' does that mean a(a+ar+ar^2+ar^3+ar^4)=49 or (a+ar+ar^2+ar^3+ar^4)^2=49. Sorry i'm just not getting anywhere with this lol, where am i going wrong?

For the extra, 4,16/5,-8?


Posted from TSR Mobile

very bad of me I have a key word missing.

The ratio of the sum of the first five terms to the sum of the reciprocals of the first five terms is 49

I was going to ask you about that myself...thanks for clearing up.

I changed my master copy, but I will not change the tsr copy.
Apologies again.

No worries...I assumed that was what you meant anyway. I'll do it tomorrow....and on initial inspection, the extra seems really weird.

sorry but no.

one is of course by inspection

I see, i thought inspection gave 4.


Posted from TSR Mobile

The Greek sun, and other desirible sights on the beaches, gave me some weird maths ideas ...

You're still out in Greece....other desirable sights? I'm just glad todays offerings don't contain products......

I am back next weekend.

there are still products and series but I try to mix them up a bit.

I do not have the question in front of me, but as I remember it you get one from the pi/2 but I do not remember the number.

Yh pi/2 gives 4


Posted from TSR Mobile

well that is one of them.

First time trying one of these things and it's not going well haha. Am I at all on the right lines? Out of my depth lol

I was wondering if this was on the right track, but it seems like the question hints at multiple values of r? :/

I was wondering if this was on the right track, but it seems like the question hints at multiple values of r? :/