Category Archives: Uncategorized

Procenträkning (Percentage calculation)

Publicerat den oktober 31, 2013 av mattelararen

Akropolis i pastell. Artist:Kristian Strid Redan under antiken räknade man med procent. Ordet procent kommer från latinet och betyder per hundra. I vår tid betyder det hundradel. Således gäller att: 5% = 5/100 = 0,05. Man kan indela alla procentproblem … Fortsätt läsa →

Publicerat i Fysik 1, Gymnasiematematik(high school math), matematik 1c, Uncategorized | Märkt | Lämna en kommentar

HTML coding

Publicerat den september 6, 2013 av mattelararen

A good instructionfilm about HTML-coding.  

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Hyperbolic functions

Publicerat den juni 8, 2013 av mattelararen

The hyperbolic functions have similar names to the trigonometric functions, but they are defined in terms of the exponential function. In this unit I define the three main hyperbolic functions, and sketch their graphs. I also discuss some identities relating … Fortsätt läsa →

Publicerat i Geometri, Uncategorized | Märkt | Lämna en kommentar

The KAngaroocompetition 2013

Publicerat den april 3, 2013 av mattelararen

On March 21th I participated in the Kängurutävlingen arranged by the Royal Swedish academy of Science. My result was 45p. See examples from last years competition here

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More Graphtheory

Publicerat den mars 19, 2013 av mattelararen

More graph-terminology: The distance between two nodes is the shortest distance between the two nodes. A graph that starts and ends in the same node is called a cycle or a closed circuit. A simple path trespasses every node only … Fortsätt läsa →

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

Graph theory

Publicerat den mars 18, 2013 av mattelararen

Complicated relations between different objects/phenomena can be visualized with graphs. a graph G is defined as an ordered pair of sets G = (V,E). where E is an ordered pair {a, b}, a,b ∈V. e.g. constitutes a pair of element … Fortsätt läsa →

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Combinations

Publicerat den mars 15, 2013 av mattelararen

It is called acombination of r elements if the order of the elements in a selection of r elements out of n elements is irrelevant and redundance is not allowed. Another way of ststing this is to say that all … Fortsätt läsa →

Publicerat i Gymnasiematematik(high school math), matematik 1c, matematik 5, Probability, Uncategorized | Märkt | Lämna en kommentar

Permutations

Publicerat den mars 14, 2013 av mattelararen

A permutation is an ordered arrangement of objects. Ex. If you have n objects to choose from you have n options for the first object, (n-1) options for teh second, (n-2) for the third and so on. Therefore the number … Fortsätt läsa →

Publicerat i matematik 1c, Uncategorized | Lämna en kommentar

Support WWF

Publicerat den mars 12, 2013 av mattelararen

Våra olika stödformer Fadderskap Stöd WWF med en banner       Kontakt Världsnaturfonden WWF Ulriksdals Slott 170 81 Solna Tel: 08-624 74 00 PG: 90 1974-6 BG: 90 1-9746 info@wwf.se     Stöd WWF med en banner Världsnaturfonden WWF … Fortsätt läsa →

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The Amur leopard – an ecotype

Publicerat den mars 5, 2013 av mattelararen

Most leopards live on savannahs in tropical climate. However at the north-eastern limit of its range it exists in a cold-temperate climate with lots of snow and down to minus 25 degrees centigrade in the winter. Only about 40 of … Fortsätt läsa →

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