4 log 16Find the log of 32 to the base 4. Solution: log432 = x. 4x = 32. (22)x logamn. ⇒log(3216). ⇒log2. 8. Express 2logx+3logy=log a in logarithm free formThis free log calculator solves for the unknown portions of a logarithmic expression using base e, 2, 10, or any other desired base.