Ellipse

Ellipse

Ellipse An ellipse is a closed curve connecting the points that the sum of the two distances to the focal points is a constant. The ellipse’s longest diameter is the major axis, and the shortest diameter … more

Differentiation

Differentiation

Differentiation The differentiation is to find the amount of change at a point on a graph f(x). This is like the process of finding the slope of the tangent line when you can draw a tangent … more

Triangle and Tetragon

Triangle and Tetragon

Triangle Regular Triangle The lengths of the three sides and the angles are the same. The size of each of the three angles is 60 °. It is the only triangle in which the inner center, … more

Radians

Radians

Degree ‘Degree’ is one of the units for measuring angles. When rotated one turn, it becomes 360 degrees. ‘Degree’ is the most commonly used unit. Radian ‘Radian’ is the ratio (= l / r) of arc … more

Pythagorean Theorem

Pythagorean Theorem 2

Pythagorean Theorem When the three sides of a right triangle are a, b, and c, and the longest side is c, the following equation is always true. The areas of a square with sides a, b, … more

Geometric Series Simulation

Geometric Series

Geometric sequence is The geometric sequence is a sequence in which each term has a constant(common) ratio to its preceding term. For example, the geometric sequence with the first term ‘a’ and the common ratio ‘r’ … more

Fourier Series 2

Fourier Series 2

Fourier series The Fourier series is an infinite series that expresses a periodic function that repeats a certain part as the sum of simple trigonometric functions. A simple trigonometric function consists of a smooth surface wave. … more

Fourier Series

Fourier Series

Fourier series The Fourier series is an infinite series that expresses a periodic function that repeats a certain part as the sum of simple trigonometric functions. A simple trigonometric function consists of a smooth surface wave. … more

String Art

String Art

You can create various string art works by utilizing the computer’s fast computing power.

Normal Distribution

Normal Distribution

There are 10 black stones and 10 white stones in your pocket. What is the distribution of the number of black stones when I take out 10 randomly? Binomial distribution When you take a stone out … more

Lorenz’s Water Mill Simulation

Lorenz’s Waterwheel

Lorenz’s waterwheel Let’s say you have a waterwheel with a bucket with a small hole in the floor. When water drips from the faucet above, the bucket runs down and spins. Then, let’s predict which direction … more

Life Game

Life Game

The Life Game is a cellular automaton devised by the British mathematician John Horton Conway in 1970. The universe of the Game of Life is an infinite two-dimensional orthogonal grid of square cells, each of which … more