tanh python

Python math.tanh()方法 (Python math.tanh() method)

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

math.tanh()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正切值，它接受一个数字并返回双曲正切值。

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

注意： math.tanh()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.tanh() method:

math.tanh()方法的语法：

    math.tanh(x)

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

参数： x –是要计算其双曲正切值的数字。

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

返回值： float-返回一个浮点值，该值是数字x的双曲正切值。

Example:

例：

    Input:
x = 1.5
# function call
print(math.tanh(x))
Output:
0.9051482536448664

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

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

Output

输出量

math.tanh( -10 ):  -0.9999999958776927
math.tanh( 0 ):  0.0
math.tanh( 1.5 ):  0.9051482536448664
math.tanh( 5 ):  0.9999092042625951
math.tanh( 15.45 ):  0.999999999999924

TypeError example

TypeError示例

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

Output

输出量

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

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

tanh python