Månadsarkiv: februari 2013

Solving polynomial equations, descartes theorem

A large part of the algebra courses at upper secondary-school level are devoted to solving equations or factorization of polynomials. This is often the same thing. Some terminology. All of these are the same: Solving a polynomial equation. Finding roots … Läs mer

Publicerat i Algebra, Gymnasiematematik(high school math), matematik 2c | Märkt , , , , | Lämna en kommentar

The area of the circle

‘Minute Physics’ derives the area of the circle with a string of pearls and a ruler:

Publicerat i Geometri, Gymnasiematematik(high school math) | Märkt , | Lämna en kommentar

Modular arithmetic & the Chinese Rest Theorem

modular arithmetic (sometimes called clock arithmetic) is a system of arithmetic for integers, where numbers ”wrap around” upon reaching a certain value—the modulus. An example of this is the clock which starts repeating itself when it has reached 12. Therefore it … Läs mer

Publicerat i Algebra, Gymnasiematematik(high school math) | Lämna en kommentar

Exceldiagrams

Excel is a versatile programme for e.g. statisitics. Learn more!

Publicerat i Gymnasiematematik(high school math) | Lämna en kommentar

Asteroid-passage

In the evening today February the 15th. an asteroid flies by close to the Earth only about 27 600 km away. It measures about 40 m in length and is similar to the one responsible for the Tunguska (Siberia) impact … Läs mer

Publicerat i Astronomy, Uncategorized | Märkt , | Lämna en kommentar

Conical sections

The force of gravity determines the trajectories of the celestial bodies. Mathematical analysis reveals that there are three types of trajectories possible for a body moving in a gravitational field determined by Newton’s law of gravity. If one of the … Läs mer

Publicerat i Geometri, Gymnasiematematik(high school math), matematik 2c | Märkt , , , | Lämna en kommentar