python如何使用log power？

Question

如果我被要求 P(t)=log(V(t)I(t)) 其中 log 是以 e 为底的自然对数。 V(t) 代表电压，I(t) 代表电流。在我的程序中，我应该输入

def logpower(voltage,current):
    p = math.log(voltage*current,math.e)
    return p

或

def logpower(voltage,current):
    p = math.log(voltage*current)
    return p

Answer 1

https://docs.python.org/3/library/math.html#math.log

math.log(x[, base])

With one argument, return the natural logarithm of x (to base e).

With two arguments, return the logarithm of x to the given base, calculated as log(x)/log(base).

所以你的两个例子都是正确的，但 p = math.log(voltage*current) 看起来更清楚了

python如何使用log power？

How to use log power in python?

python

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