What does math log mean in python?
Python offers many inbuild logarithmic functions under the module “math” which allows us to compute logs using a single line. There are 4 variants of logarithmic functions, all of which are discussed in this article. Syntax : math.log(a,Base) Parameters : a : The numeric value Base : Base to which the logarithm has to be computed. Return Value : Returns natural log if 1 argument is passed and log with specified base if 2 arguments are passed. Exceptions : Raises ValueError if a negative no. is passed as argument. Python3
Output : Natural logarithm of 14 is : 2.6390573296152584 Logarithm base 5 of 14 is : 1.6397385131955606 2. log2(a) : This function is used to compute the logarithm base 2 of a. Displays more accurate result than log(a,2). Syntax : math.log2(a) Parameters : a : The numeric value Return Value : Returns logarithm base 2 of a Exceptions : Raises ValueError if a negative no. is passed as argument. Python3
Output : Logarithm base 2 of 14 is : 3.807354922057604 3. log10(a) : This function is used to compute the logarithm base 10 of a. Displays more accurate result than log(a,10). Syntax : math.log10(a) Parameters : a : The numeric value Return Value : Returns logarithm base 10 of a Exceptions : Raises ValueError if a negative no. is passed as argument. Python3
Output : Logarithm base 10 of 14 is : 1.146128035678238 3. log1p(a) : This function is used to compute logarithm(1+a) . Syntax : math.log1p(a) Parameters : a : The numeric value Return Value : Returns log(1+a) Exceptions : Raises ValueError if a negative no. is passed as argument. Python3
Output : Logarithm(1+a) value of 14 is : 2.70805020110221 Exception 1. ValueError : This function returns value error if number is negative. Python3
Output : log(a) value of -14 is : Runtime Error : Traceback (most recent call last): File "/home/8a74e9d7e5adfdb902ab15712cbaafe2.py", line 9, in print (math.log(-14)) ValueError: math domain error Practical Application One of the application of log10() function is that it is used to compute the no. of digits of a number. Code below illustrates the same. Python3
Output : The number of digits in 73293 are : 5 This article is contributed by
Manjeet Singh. If you like GeeksforGeeks and would like to contribute, you can also write an article using write.geeksforgeeks.org or mail your article to . See your article appearing on the GeeksforGeeks main page and help other Geeks. What does math log do?The Math. log() method returns the natural logarithm (base E) of a number.
How do you write logs in Python?Adding logging to your Python program is as easy as this:. import logging.. import logging logging. debug('This is a debug message') logging. info('This is an info message') logging. ... . WARNING:root:This is a warning message ERROR:root:This is an error message CRITICAL:root:This is a critical message.. What base is log in Python?Understanding the log() functions in Python
The math. log(x) function is used to calculate the natural logarithmic value i.e. log to the base e (Euler's number) which is about 2.71828, of the parameter value (numeric expression), passed to it.
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