math.log(x) - returns the natural logarithm of x (to base e)math.exp(x) -returns e raised to the power x, where e = 2.718281… is the base of natural logarithms.math.e - Euler's number.>>> math.e*3 20.085536923187664 >>> math.log(_) 3.0 # Illustrating log base e (ea e*b) = a + b >>> int(math.log(math.exp(5) math.exp(7))) # = 5 + 7 12 >>> math.log(math.exp(5) * math.exp(7)) 12.0