Månadsarkiv: februari 2013

Solving polynomial equations, descartes theorem

Publicerat den februari 28, 2013 av mattelararen

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 … Fortsätt läsa →

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

The area of the circle

Publicerat den februari 27, 2013 av mattelararen

‘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

Publicerat den februari 21, 2013 av mattelararen

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 … Fortsätt läsa →

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

Exceldiagrams

Publicerat den februari 19, 2013 av mattelararen

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

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

Asteroid-passage

Publicerat den februari 15, 2013 av mattelararen

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 … Fortsätt läsa →

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

Conical sections

Publicerat den februari 11, 2013 av mattelararen

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 … Fortsätt läsa →

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