python中acosh

Python math.acosh()方法 (Python math.acosh() method)

math.acosh() method is a library method of math module, it is used to get the hyperbolic arc cosine of the given number in radians, it accepts a number and returns hyperbolic arc cosine.

math.acosh()方法是数学模块的库方法，用于获取以弧度为单位的给定数字的双曲反余弦，它接受一个数字并返回双曲反余弦。

Note: math.acosh() method accepts only numbers (positive integer or float greater than or equal to 1), if we provide a negative value it returns a ValueError – "ValueError: math domain error", and if we provide anything else except the number, it returns error TypeError – "TypeError: a float is required".

注意： math.acosh()方法仅接受数字(正整数或浮点数大于或等于1)，如果我们提供负值，它将返回ValueError – “ ValueError：math domain error” ，并且如果我们提供其他内容，则除外数字，它返回错误TypeError – “ TypeError：需要浮点数” 。

Syntax of math.acosh() method:

math.acosh()方法的语法：

    math.acosh(x)

Parameter(s): x – is the number whose hyperbolic arc cosine to be calculated.

参数： x –是要计算其双曲反余弦的数字。

Return value: float – it returns a float value that is the hyperbolic arc cosine value of the number x.

返回值： float-它返回一个浮点值，该值是数字x的双曲反余弦值。

Example:

例：

    Input:
x = 1.5
# function call
print(math.acosh(x))
Output:
0.9624236501192069

Python代码演示math.acosh()方法的示例 (Python code to demonstrate example of math.acosh() method)

# Python code to demonstrate example of
# math.acosh() method
# importing math module
import math
# number
x = 1
print("math.acosh(",x,"): ", math.acosh(x))
x = 1.5
print("math.acosh(",x,"): ", math.acosh(x))
x = 5
print("math.acosh(",x,"): ", math.acosh(x))
x = 15.45
print("math.acosh(",x,"): ", math.acosh(x))

Output

输出量

math.acosh( 1 ):  0.0
math.acosh( 1.5 ):  0.9624236501192069
math.acosh( 5 ):  2.2924316695611777
math.acosh( 15.45 ):  3.429707205929454

ValueError example

ValueError示例

# Python code to demonstrate example of
# math.acosh() method with exception
# importing math module
import math
# number
x = -1
print("math.acosh(",x,"): ", math.acosh(x))

Output

输出量

Traceback (most recent call last):
File "/home/main.py", line 9, in <module>
print("math.acosh(",x,"): ", math.acosh(x))
ValueError: math domain error

TypeError example

TypeError示例

# Python code to demonstrate example of
# math.acosh() method with exception
# importing math module
import math
# number
x = "2.5"
print("math.acosh(",x,"): ", math.acosh(x))

Output

输出量

Traceback (most recent call last):
File "/home/main.py", line 9, in <module>
print("math.acosh(",x,"): ", math.acosh(x))
TypeError: a float is required

翻译自: https://www.includehelp.com/python/math-acosh-method-with-example.aspx

python中acosh