
linear algebra - How to check the linearity of a function ...
Apr 30, 2014 · 1 You know that a linear function satisfies the following property: $$f (a+b)=f (a)+f (b)$$ and you want to determine whether a particular function $g$ is linear, so you just check …
What is the difference between linear and affine function?
Jun 8, 2023 · A linear function fixes the origin, whereas an affine function need not do so. An affine function is the composition of a linear function with a translation, so while the linear part …
What is the difference between linear function and linear map ...
A linear function (or functional) gives you a scalar value from some field $\mathbb {F}$. On the other hand a linear map (or transformation or operator) gives you another vector. So a linear …
How is the Fourier transform "linear"? - Mathematics Stack Exchange
A "linear" function usually means one who's graph is a straight line, or that involves no powers higher than 1. That isn't the definition of linear, and doesn't really make sense in the context of …
real analysis - maximum of a linear function on a convex set ...
Mar 29, 2021 · How to prove that any linear function which is defined on a convex subset of $\\mathbb{R}^n$ attains its maximum always at one of the extreme points of the set? Thank …
linear algebra - Proving Linearity - Mathematics Stack Exchange
Mar 15, 2018 · You can then use this definition to show that some function is linear. Let's also take a step back to when you probably recently learned about dimensions of a vector space = …
intutive difference between linear map/transformation vs linear …
Sep 3, 2016 · However, what is traditionally called a linear function, in non-abstract algebra (or highschool algebra, or whatever it is formally called), namely: f (x) = a + bx is not a linear …
Why are linear functions linear? - Mathematics Stack Exchange
Feb 7, 2015 · That's why I emphasized the distinction between a linear function in the context of calculus, and in the context of linear algebra and functional analysis. Although I do agree that …
functional analysis - Linear function, that is not continuous ...
Linear function, that is not continuous? Ask Question Asked 7 years, 4 months ago Modified 2 years, 11 months ago
Is linear function convex or concave? - Mathematics Stack Exchange
Dec 18, 2013 · I was wondering if linear function is convex or concave? For example f(x)=x, is function whose second derivate is 0 so we cant tell anything using this criteria. Can someone …