You can use exp(x) function of math library, which is same as e^x . Hence you may write your code as: import math x.append(1 - math.exp( ... ... <看更多>

You don't take the derivative of a constant. You could, but it's zero. What you should be talking about is the exponential function, ex commonly denoted by ... ... <看更多>

Jul 14, 2013 - 17. Eulers Number (e): 2.7182 Also known as the exponential growth constant, Euler's... ... <看更多>