Question: the equivalent function of log x^2 is?
Answer: log (x^2) is not always 2log(x) as first one is defined for negative and positive both types of real x but the second one is defined only for positive x. So, log (x^2)=log (|x|^2)=2log(|x|) so log (x^2) and 2log(|x|) both are now same functions. Thanks.