New posts in functions

Find the number of natural solutions of $5^x+7^x+11^x=6^x+8^x+9^x$

calculus real-analysis functions exponential-function karamata-inequality

Looking for different proofs of "Discrete Liouville's Theorem".

combinatorics complex-analysis functional-analysis probability-theory functions

Number of real solutions of $\begin{array}{r} {\left[\frac{2 x+1}{3}\right]+\left[\frac{4 x+5}{6}\right]} =\frac{3 x-1}{2} \end{array}$

algebra-precalculus functions inequality ceiling-and-floor-functions

What is a varible produced through binary dimension reduction called?

functions notation index-notation

$f(x) =ax^6 +bx^5+cx^4+dx^3+ex^2+gx+h $, find $f(7)$.

algebra-precalculus functions polynomials

Is there a way to prove this exponential inequality: if $a>b$ then $a^a>b^b$ for $a,b>1$?

real-analysis algebra-precalculus functions inequality exponential-function

Name for the set of possible functions $A\to B$

functions elementary-set-theory notation terminology

What does the notation $f\colon A\to B$ mean?

elementary-set-theory functions notation

Does the domain of the function depend on how you write it?

Do we have always $f(A \cap B) = f(A) \cap f(B)$? [closed]

functions elementary-set-theory examples-counterexamples

Limit property of second derivative of bounded function.

calculus functions

product rule for matrix functions?

calculus real-analysis analysis functions multivariable-calculus

Is there a function that maps all integers from $1$ to $m\cdot n$ in ascending order to an $m\times n$ matrix?

matrices functions

Is it necessary for the codomain of the inner function to be equal to the domain of the outer function in function composition?

functions function-and-relation-composition

If $f: A\rightarrow B$ and $g: B\rightarrow C$ are surjective, then $g\circ f$ is surjective.

functions proof-writing solution-verification function-and-relation-composition

Big-O and function composition

functions asymptotics computational-complexity function-and-relation-composition

If $B(x+y)-B(x)-B(y)\in\mathbb Z$ can we add an integer function to $B$ to make it additive?

algebra-precalculus functions functional-equations

Property of odd degree polynomials?

algebra-precalculus functions polynomials

Are there functions $f,g:\mathbb{R} \to \mathbb{R}$ such that they differentiate each other?

real-analysis functions derivatives

Exercise about continuous functions

calculus real-analysis functions continuity