The slope of a line is the direction in which the line goes. You can calculate it as the ratio between horizontal change and vertical change, or you can use the derivative.

- Jan 14, 2021

Finding the intersection is something that comes up a lot in math. To do this you need to set the expressions equal and solve for x. Then you can determine y by filling in the x you found.

- Jan 6, 2021

The variance of a probability distribution is a measure to quantify the spread of a distribution. If the variance is low, all outcomes are close to the mean, while distributions with a high variance have outcomes that could be far away from the mean.

- Jan 7, 2021

The mean is the most important measure of probability distributions. It tells a lot about the likelihood that certain events will happen.

- Jan 8, 2021

If you were asked to add together all of the numbers from 1 to 100, what would you do? Would you go through each number, adding to your total as you went or is there a quicker way? Find out in this article.

- Jan 16, 2021

The Pythagorean theorem is one of the most well-known theorems in math. It describes the length of the hypothenuse of a right triangle using the lengths of the other sides.

- Dec 31, 2020

A right triangle is a triangle in which one angle is right, meaning it is exactly 90°. For these triangles, it is possible to calculate the other angles using goniometric functions as the sine, cosine and tangent.

- Jan 6, 2021

The inverse function of a function f(x) tells you which x you need to fill in in f to get a certain outcome. It therefore can be very useful in practice.

- Dec 11, 2020

The limit of a function describes how the function behaves in the neighborhood of some value. Often, it is interesting to look at the limit for x to infinity. This describes what happens when you would follow the line of the graph of the function until "the end".

- Dec 16, 2020

Finding the minimum or maximum of a function is very important in mathematics. It can help you finding the optimal solution to a problem. Often you want some quantity to be maximal, such as profits or capacity. Also minima can be very useful, for example, when looking at a cost function.

- Dec 8, 2020

Finding the derivative is something that comes up a lot in maths, but what is it actually? The derivative tells you what the slope of the function is in a certain point. The derivative of a function can be calculated using the definition, but mostly it is done by using standard rules.

- Jan 13, 2021

This article can help you learn how to find the derivative of constants in various forms.

- Nov 21, 2020

In this article, you can learn how to use the power-reducing formulas in simplifying and evaluating trigonometric functions of different powers.

- Nov 19, 2020

This article will help you learn to evaluate limits by solving various problems in Calculus that require applying the limit laws.

- Nov 19, 2020

The theorem of Pythagoras is well known, showing the relationship between the areas of squares on the sides of right-angled triangles. However, it may not be realised that the theorem can also be used to show relationships between shapes other than squares.

- Nov 22, 2020

Quadratic inequalities is a topic that comes up a lot in various mathematical problems. To solve them, one has to first solve the equality and then determine the solution by looking at the graph.

- Nov 28, 2020

In this article, you can learn the concept of the Same-Side Interior Angles Theorem in Geometry through solving various examples provided. The article also includes the Converse of the Same-Side Interior Angles Theorem and its proof.

- Nov 18, 2020

Linear equations pop up everywhere and solving them is one of the most basic tools in mathematics.

- Nov 13, 2020

Learn to solve different kinds of related rates problems in Calculus. This article is a full guide that shows the step-by-step procedure of solving problems involving related/associated rates.

- Nov 12, 2020

Learn to use Descartes' Rule of Signs in determining the number of positive and negative zeros of a polynomial equation. This article is a full guide that defines Descartes' Rule of Signs, the procedure on how to use it, and detailed examples and solutions.

- Nov 7, 2020

This article is a full guide in solving problems involving the use of the factor theorem. It includes the definition, proof, examples and solutions about the factor theorem.

- Dec 5, 2020

This article is a full guide to solving problems on 30-60-90 triangles. It includes pattern formulas and rules necessary to understand the concept of 30-60-90 triangles. There are also examples provided to show the step-by-step procedure on how to solve certain kinds of problems.

- Nov 21, 2020

The number 'e' is an extremely important number in mathematics and is used in various situations. But what is it? How do we calculate it? Find out in this article.

- Oct 14, 2020

Ever wondered if you should order one large pizza or two medium pizzas? Let some simple mathematics find the answer.

- Sep 16, 2020

Bayes' Law is an important tool to calculate conditional probabilities, such as the probability that A happens given B happened. It has many applications, but is often interpreted incorrectly.

- Dec 16, 2020

Complex numbers are an extension of the real numbers that allow us to calculate the square root of negative numbers. All numbers can be represented as a complex number, and we can do all kinds of computations with them.

- Nov 29, 2020

A look at how A4 paper is defined and what makes it so interesting mathematically.

- Sep 2, 2020

What is Pascal's Triangle and why is it so interesting? Find out here.

- Jun 12, 2020

Try these five math word problems to sharpen your mind. The quizzes are suitable for anybody aged 11 years and above.

- Jun 5, 2020

Find out about Paul Erdős, his life and the number that bears his name.

- Jun 3, 2020

A look at what fractals are and three of the most popular examples: the middle third Cantor Set, the Koch curve, and the Sierpinski triangle.

- May 16, 2020

The French mathematician Émile Borel proposed a law about the probability of events occurring.

- May 6, 2020

Multiplying two matrices is different than multiplying just numbers. Because of these differences, the order in which the matrices are multiplied does matter. To be able to multiply two matrices, the dimensions must be right.

- Nov 13, 2020

The tangent line of a function in a point is a straight line that has the same slope as the function has in that point.

- Dec 9, 2020

Learn how the binary system works, how to convert between binary and decimal and why the binary system is so important.

- Apr 28, 2020

Finding the roots of a function is a very important operation in maths. For quadratic functions, there are a couple of ways to easily find the roots by hand.

- Dec 14, 2020

There are many special types of numbers beyond the ones we commonly learn about, like square and prime numbers. The more rarely discussed types include perfect numbers, vampire numbers, Fibonacci numbers and narcissistic numbers.

- Apr 25, 2020

A Nash equilibrium is a situation in a mathematical game in which none of the players would want to change their strategy without the other players changing theirs. A Nash equilibrium can occur in non-cooperative games only.

- Jul 7, 2020

If you have a room full of people, how many handshakes are required before everybody has shaken hands with everybody else exactly once?

- Apr 18, 2020

Differentiation is used to find the rate of change of a mathematical function as its input changes. Read on to find out how to differentiate from first principles.

- Apr 2, 2020

How many squares of all different sizes are there on a chessboard? Instead of counting them up, we can calculate the answer with a formula.

- Mar 28, 2020

A look at Bertrand's Paradox, where a seemingly simple probability question yields some very differing results.

- Mar 27, 2020

How to use scale factors when working with area and volume.

- Feb 16, 2020

Learn how to compute for the surface area and volume of truncated solids. This article covers concepts, formulas, problems, and solutions about truncated cylinders and prisms.

- Feb 8, 2020

Learn how to calculate the surface area and volume of the frustums of the right circular cone and pyramid. This article talks about the concepts and formulas needed in solving for the surface area and volume of frustums of solids.

- Mar 2, 2020

A number of stories surround the puzzle known as Tower of Hanoi, Tower of Brahma and Lucas' Tower. Over the years, the puzzle has provided challenge to people in all walks of life, including mathematicians, computer programmers and strategists.

- Oct 26, 2020

Learn how to approximate the area of irregularly shaped curve figures using Simpson’s 1/3 Rule. This article covers concepts, problems, and solutions about how to use Simpson’s 1/3 Rule in area approximation.

- Feb 8, 2020

Learn how to graph a circle given the general form and standard form. Familiarize with converting general form to standard form equation of a circle and know the formulas necessary in solving problems about circles.

- Dec 31, 2019

Learn how to graph an ellipse given the general form and standard form. Know the different elements, properties, and formulas necessary in solving problems about ellipse.

- Dec 31, 2019

Learn how to solve problems involving Quadrilaterals in Plane Geometry. It contains formulas, calculator techniques, descriptions, and properties needed in order to interpret and solve Quadrilateral problems.

- Mar 25, 2020