np.cosh没有分配

Python math.cosh()方法 (Python math.cosh() method)

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

math.cosh()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余弦值，它接受一个数字并返回双曲余弦值。

Note: math.cosh() method accepts only numbers, if we provide anything else except the number, it returns error TypeError – "TypeError: a float is required".

注意： math.cosh()方法仅接受数字，如果我们提供除数字以外的任何其他内容，它将返回错误TypeError – “ TypeError：需要浮点数” 。

Syntax of math.cosh() method:

math.cosh()方法的语法：

    math.cosh(x)

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

参数： x –是要计算其双曲余弦的数字。

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

返回值： float-返回一个浮点值，该值是数字x的双曲余弦值。

Example:

例：

    Input:
x = 1.5
# function call
print(math.cosh(x))
Output:
2.352409615243247

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

# Python code to demonstrate example of
# math.cosh() method
# importing math module
import math
# number
x = -10
print("math.cosh(",x,"): ", math.cosh(x))
x = 0
print("math.cosh(",x,"): ", math.cosh(x))
x = 1.5
print("math.cosh(",x,"): ", math.cosh(x))
x = 5
print("math.cosh(",x,"): ", math.cosh(x))
x = 15.45
print("math.cosh(",x,"): ", math.cosh(x))

Output

输出量

math.cosh( -10 ):  11013.232920103324
math.cosh( 0 ):  1.0
math.cosh( 1.5 ):  2.352409615243247
math.cosh( 5 ):  74.20994852478785
math.cosh( 15.45 ):  2563419.889913628

TypeError example

TypeError示例

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

Output

输出量

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

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

np.cosh没有分配