You can either import the whole package as import math and do math.sqrt(81) . But since you only need sqrt() function from math, ... ... <看更多>

Computes square root in Python SQRT. GitHub Gist: instantly share code, ... import sys. def sqrt(n):. if n < 0: return "Value Error: math domain error". ... <看更多>

This section tells you how to reach sin, cos, and similar functions in a Python context. Example: Using the square root function. Problem. Consider the formula ... ... <看更多>

math.sqrt(x) 比 math.pow(x, 0.5) 或 x ** 0.5 *快，*但結果的精度是相同的。 cmath 模組與 math 模組非常相似，除了它可以計算複數並且其所有結果都 ... ... <看更多>