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[kazemagic]

I got a question on geometric progression:
Evaluate the series 16 - 8 + 4 - 2 + ... +1/16

Okay, so I'm trying to find out how terms are there in this series using logarithm. I always have to input log of a negative number in the calculator because of the ratio being a negative number and it keeps giving me an error. So I guess my logarithm skillz have gone rusty lol

Any help would be appreciated, thanks

 

[RealiseNothing]

Came into this thread thinking it was a congrats thread for deswa.

How disappoint I am indeed.

 

[RealiseNothing]

I got a question on geometric progression:
Evaluate the series 16 - 8 + 4 - 2 + ... +1/16

Okay, so I'm trying to find out how terms are there in this series using logarithm. I always have to input log of a negative number in the calculator because of the ratio being a negative number and it keeps giving me an error. So I guess my logarithm skillz have gone rusty lol

Any help would be appreciated, thanks

Just pretend it's a positive ratio brah.

 

[golgo13]

-1/2 ?

 

[kazemagic]

Just pretend it's a positive ratio brah.

lol thx brah

 

[kazemagic]

Just pretend it's a positive ratio brah.

nvm i got some weird 0.decimal value Can someone show me how do I use log on this thing and move them around?

Thanks

 

[RealiseNothing]

Pretend the ratio is postive, so instead of it being -1/2, let it be 1/2.











Now r=1/2 cos we took it to be positive yer:







So there are 9 terms since the amount of terms is "n+1".

 

[kazemagic]

Pretend the ratio is postive, so instead of it being -1/2, let it be 1/2.











Now r=1/2 cos we took it to be positive yer:







So there are 9 terms since the amount of terms is "n+1".

ohh alright thanks bro i took n-1 as log so i got uber confused LOL