Mr K, I have a question....(^_^)
I'm just wondering about logarithm problems like 2^x = 3^(2x+5), (long answer 1.a on the pre-test) and the answer is x = (5ln3)/(ln2 - 2ln3). My question is, when should I use the "ln" instead of "log"? I mean, if I solved that problem using common log and got x = (5log3)/(log2- 2log3), am I wrong? I have no problem on dealing with exponents and logarithms (i hope so, for my sake), just the use of "ln" and "log" confuses me. Im thinking to ask this question tomorrow, but maybe you don't have time tomorrow to answer questions.