[MOVED] logs and exponents (solving log equation)  TOPIC_SOLVED

Complex numbers, rational functions, logarithms, sequences and series, matrix operations, etc.

[MOVED] logs and exponents (solving log equation)

Postby csimpson20 on Tue Oct 13, 2009 8:40 pm

solve: log(x + 4) - log(2x - 3) = log 2.
csimpson20
 
Posts: 1
Joined: Tue Oct 13, 2009 8:36 pm

Sponsor

Sponsor
 

  TOPIC_SOLVED

Postby stapel_eliz on Tue Oct 13, 2009 11:57 pm

First, combine the two logs on the left-hand side by using a log rule.

Once you have "log(something) equals log(something else)", you can set (something) equal to (something else), and then solve the resulting rational equation.

If you get stuck, please reply showing your work and reasoning so far. Thank you! :wink:
User avatar
stapel_eliz
 
Posts: 1717
Joined: Mon Dec 08, 2008 4:22 pm


Return to Advanced Algebra ("pre-calculus")