Find the total number of terms in the given geometric progression
1, -3, 9,...., 531441
Full procedure would be highly appreciated
Please Help
Sorry , i made a mistake . Edited my post ..
you can see from the series that the positive terms are odd terms .
So n must be odd , and (n-1) would be even .
Since the power of -3 is even , then we can just ignore the -ve sign
take the logs , then you would find that n=13 .