How do I detect whether a variable is a function? - Stack Overflow
I have a variable, x, and I want to know whether it is pointing to a function or not. I had hoped I could do something like: >>> isinstance (x, function) But that gives me: Traceback (most
What does it mean for a variable to be a function of another?
Jun 25, 2020 · A little more broadly, how can I know when something is a function and when it is an equation, and are there any notable differences or problems when you misuse them (e.g. …
Check if a variable is of function type - Stack Overflow
Suppose I have any variable, which is defined as follows: var a = function() {/* Statements */}; I want a function which checks if the type of the variable is function-like. i.e. : function foo(v...
algebra precalculus - Determining whether the function is …
Aug 7, 2020 · By definition, an exponential function is where the independent variable (the x-value) is the exponent. While you're not wrong in this respect, this only really holds if the …
algebra precalculus - How do find if a relation is a function ...
Feb 17, 2016 · 1 For a relation to be a function, it must be one-to-one or injective, meaning that it must map each input into a different output. If you can't use the vertical line test, see if you can …
definition - How to show that a given function is a polynomial ...
Nov 24, 2017 · According to that definition, there is a distinction between a polynomial and a function that it represents, and whether something is a polynomial can be determined …
solution verification - How to prove if something is a function ...
Jan 2, 2015 · For example f may be from A -> B and g is from C -> D and if the Range of g is not a subset of Domain of f the composition won't be a function. So essentially we have to prove …
How do I tell if this function is a probability density function?
How do I tell if this function is a probability density function? Ask Question Asked 13 years, 2 months ago Modified 9 years, 3 months ago
How to know if a function is linearly independent or dependent?
Aug 14, 2019 · If there is a constant linear dependence between the functions, it also occurs between their derivatives and between their second derivatives. So assume a constant linear …
Measuring function execution time in R - Stack Overflow
371 Is there a standardized way in R of measuring execution time of function? Obviously I can take system.time before and after execution and then take the difference of those, but I would …