New post in Functions

Decide whether the set A of positive integers divisible by 17 and B the set of positive integers divisible by 11 are in bijection.

July 26th, 2022

The function $g$ is such that $g(x) = 3x^2 - 12$ for $x <q$, find the greatest possible value of $q$.

December 20th, 2022

Is there an injective function from the set of natural numbers N to the set of rational numbers Q, and viceversa?

August 18th, 2022

How to prove if function is strictly monotonic increasing

August 16th, 2022

proving that f is bijection from NxNxN to N

July 23rd, 2022

Is [$x$] monotonically increasing?(where $[x]$ means greatest integer function)

July 23rd, 2022

Differentiation of a modulus function

October 14th, 2022

How to prove a function is concave? (Single Variable)

July 22nd, 2022

Showing $\lim_{(x,y) \to (0,0)} \sin (xy) / xy = 1$

October 2nd, 2022

Area functions, Find a formula for A(x)

July 30th, 2022

How to prove a relation is reflexive and transitive.

July 21st, 2022

The hat function

August 1st, 2022

How to find a polynomial of least degree with some of its points given?

August 1st, 2022

Proof of period of $f(ax+b)$

August 1st, 2022

Give a Bijection that is in-between 2 intervals and use a formal proof to show that it is a bijection.

April 3rd, 2020

What is value of $f(1) + f(2) + f(3) + f(4) + f(5) + f(6)$?

November 11th, 2020

Which function is an injection but NOT A SURJECTION

December 7th, 2020

how to find turning points of a quartic function using calculus?

August 1st, 2022

Show that the equation $f(x) = 0$ has no solution.

August 1st, 2022

What is the domain and range of $y = \sqrt{9 − x^2}$?

June 26th, 2020

Solving a problem using the definition of limit

July 11th, 2020

Calculate an interval on a scale / axis that allways has a point / gridline at $0$

November 5th, 2020

One-to-one and onto functions

August 1st, 2022

six is the maximum number of common chords of a parabola and a circle

August 1st, 2022

How do I find out the symmetry of a function?

August 1st, 2022

Don't understand this question [table of ordered pairs, find missing values]

October 14th, 2020

Is a uniformly continuous functions bounded?

August 1st, 2022

many to one functions

March 25th, 2020

Can someone show me how to solve functions that include a set of ordered pairs? Im really stuck on this.

October 24th, 2020

Prove a function is a norm?

January 25th, 2020