Python | Decimal sqrt()方法
原文:https://www.geeksforgeeks.org/python-decimal-sqrt-method/
Decimal#sqrt() : sqrt() 是一个 Decimal 类方法，它将非负数的平方根返回到上下文精度。
语法: Decimal.sqrt()
参数:十进制值
返回:非负数的平方根到上下文精度。
代码# 1:sqrt()方法示例
# Python Program explaining
# sqrt() method
# loading decimal library
from decimal import *
# Initializing a decimal value
a = Decimal(1)
b = Decimal(2)
# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)
# Using Decimal.sqrt() method
print ("\n\nDecimal a with sqrt() method : ", a.sqrt())
print ("Decimal b with sqrt() method : ", b.sqrt())
输出:
Decimal value a : 1
Decimal value b : 2
Decimal a with sqrt() method : 1
Decimal b with sqrt() method : 1.414213562373095048801688724
代码# 2:sqrt()方法示例
# Python Program explaining
# sqrt() method
# loading decimal library
from decimal import *
# Initializing a decimal value
a = Decimal(300)
b = Decimal(15)
# printing Decimal values
print ("Decimal value a : ", a)
print ("Decimal value b : ", b)
# Using Decimal.sqrt() method
print ("\n\nDecimal a with sqrt() method : ", a.sqrt())
print ("Decimal b with sqrt() method : ", b.sqrt())
输出:
Decimal value a : 300
Decimal value b : 15
Decimal a with sqrt() method : 17.32050807568877293527446342
Decimal b with sqrt() method : 3.872983346207416885179265400
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