Cubic Integration

Click on the x-axis to set the left limit, then click and drag to evaluate the integral. Click again to reset.

Verhulst Diagram

Click somewhere on the x-axis to start the iteration.

Regula Falsi

Click on the graph at two points to construct the linear approximation to the root. The two points must have opposite sign or you'll have to start again!

Newton–Raphson method

Perform one step of the Newton-Rhapson metthod by clicking on the function.

Complex Operations

Click a button to see the effect of that operation. Move the red dots around to change the inputs.

Cubic Differentiation

Use the sliders to adjust the function, click the function to see the tangent lines.

Quadratic Differentiation

Use the sliders to adjust the function, click the function to see the tangent lines.

Matrix Action 2

Use the sliders to change the matrix to see the effect on the unit square.

Matrix Action

Click to create an arrow, you can drag it around. Use the sliders to change the matrix.

Snakes in a Plane

We have a guest post from the lovely Arwen Nicholson. Press the spacebar to start and pause the game. Use the arrow keys to lead the snake to the food.

The Tower of Brahma

In the great temple at Benares beneath the dome which marks the centre of the world, rests a brass plate in which are fixed three diamond needles, each a cubit high and as thick as the body of a bee. On one of these needles at the creation, God placed sixty-four disks of pure gold, the largest disk resting on the brass plate and the others getting smaller and smaller up to the top one. This is the Tower of Brahma. Day and night unceasingly, the priests transfer the disks from one diamond needle to another according to the fixed and immutable laws of Brahma, which require that the priest on duty must not move more than one disk at a time and that he must place this disk on a needle so that there is no smaller disk below it. When all sixty-four disks shall have been thus transferred from the needle on which at creation God placed them to one of the other needles, tower, temple and Brahmins alike will crumble into dust, and with a thunderclap the world will vanish.