Hey guys, After working with high school and college students in algebra 1 & 2, i came across quite a few students who found logarithms hard to work with . Most of the students failed to retain some important log based rules which were essential to be effective at problem solving. Here's a list of a few rules : logab = x could be written as ax = b. Let me work a couple of examples to show how this rule works log39 = 2 By using the rule that i talked about above can be written as 3^2 = 9 where a=3, x=2 and b = 9. loga10 - loga5 can be rewritten in the form loga(10/5) which is the same as loga2. As long as the bases are equal to one another we can divide when there is a subtraction taking place using log. When it comes to addition we need to add logarithms that have the same base. Also... read more