The logarithm log_bx for a base b and a number x is defined to be the inverse function of taking b to the power x, i.e., b^x. Therefore, for any x and b, x=log_b(b^x), (1) or equivalently, x=b^(log_bx). (2) For any base, the logarithm function has a singularity at x=0. In the above plot, the blue curve is the logarithm to base 2 (log_2x=lgx), the black curve is the logarithm to base e (the natural logarithm log_ex=lnx), and the red curve is the logarithm to base 10 (the common...