I would like some help with logarithms.

I got stuck with the following (sorry if it has been answered, but I could't find it):

we have:
logax= lnx / lna  -- "change of base"
and
ln( x1 * x2 ) = lnx1 + lnx2

show that loga(x1 * x2 ) = loga(x1) + loga(x2)

in Pre-Algebra Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

log(x*y)=log(x)+log(y) is tru for all logs,

base av log dont matter...same ops, same rules, just differ numbers

log defined tu be the power yu gotta raes base tu tu get x
by

Related questions

2 answers
how do you solve logarithms with like bases? 64*4^(3-3n)=4^3
asked Nov 6, 2012 in Algebra 2 Answers by anonymous | 948 views
1 answer
I need help with (2+8)+9
asked Oct 15, 2012 in Pre-Algebra Answers by anonymous | 652 views
1 answer
Please help with this math masters question
asked Apr 11, 2013 in Pre-Algebra Answers by anonymous | 718 views
2 answers
some help would be awesome
asked Mar 14, 2015 in Word Problem Answers by anonymous | 627 views
1 answer
some help would be great
asked Mar 14, 2015 in Word Problem Answers by anonymous | 534 views
2 answers
I need help with some math. Do you mind helping me anyone?
asked Feb 12, 2016 in Other Math Topics by Kayla1 Level 1 User (640 points) | 3.3k views
2 answers
Can i have some help with this question? 4c+12
asked Jun 6, 2013 in Algebra 2 Answers by anonymous | 665 views
1 answer
How would you solve 5 over 6 devided by 15?
asked Jun 28, 2013 in Fraction Problems by diamondeb Level 1 User (560 points) | 684 views
2 answers
how would you solve 9 x 5 over 6?
asked Jun 28, 2013 in order of operations by diamondeb Level 1 User (560 points) | 731 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
732,340 users