Summary of formulas for exponent and logarithm

Article reprinted from: http://blog.sina.com.cn/s/blog_638f5b130100gofv.html

Exponential and logarithmic in the recent beginning, some in the form of inequality to test, some of which have some of the formula deformation to investigate, because this knowledge is not very good, and this piece involves some formula set up the precondition, so we are easy to miss out some range, and choose the wrong answer, Now I will be involved in the formula are all to everyone, I hope you can be skilled to remember: