K kpad5991 Member Joined Dec 29, 2016 Messages 238 Gender Male HSC 2018 May 14, 2018 #1 1. Find the sums of these AP's who's terms are logarithms a) log (b) 36 + log (b) 18 + log (b) 9 + ...log (b) 9/8 b) log (x) 27/8 + log (x) 9/4 + log (x) 3/2 + ....(10 terms)
1. Find the sums of these AP's who's terms are logarithms a) log (b) 36 + log (b) 18 + log (b) 9 + ...log (b) 9/8 b) log (x) 27/8 + log (x) 9/4 + log (x) 3/2 + ....(10 terms)
fan96 617 pages Joined May 25, 2017 Messages 543 Location NSW Gender Male HSC 2018 Uni Grad 2024 May 14, 2018 #2 For a), note that the term inside the logarithm is halved each time. So, rewrite it as And use the law . b) can be solved similarly.
For a), note that the term inside the logarithm is halved each time. So, rewrite it as And use the law . b) can be solved similarly.
HeroWise Active Member Joined Dec 8, 2017 Messages 353 Gender Male HSC 2020 May 14, 2018 #3 Thats actually a good question (at least for me) It took me long to realise the ratio and AP being together, fan96 gets the credit Last edited: May 14, 2018
Thats actually a good question (at least for me) It took me long to realise the ratio and AP being together, fan96 gets the credit
