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jifka (40)in #programming • 6 years ago
Simplefootball - The idea
In my introduction I said that I would also present some of my programming and today we will get started with that. The program I want to talk about is a simple football (soccer)…
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jifka (40)in #math • 6 years ago
Polar coordinates
Today we will come back to complex numbers. As discussed before, a complex number z is represented as a + b * i with a and b real numbers and i the imaginary unit (the square…
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jifka (40)in #math • 6 years ago
The harmonic mean
Last time we looked at the geometric mean in contrast to the “normal” arithmetic mean. There is even a third way to determine the “middle” of two numbers, the harmonic mean. The…
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jifka (40)in #math • 6 years ago
The geometric mean
When there is a competition to estimate some number (e.g. the amount of money in a jar full of coins) we want the person closest to the actual value to win. Since the distance…
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jifka (40)in #math • 6 years ago
Complex numbers
Some of my following posts might use complex numbers so I want to properly introduce them. To understand why we need them we will first take a look at other, more simple, sets of…
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jifka (40)in #math • 6 years ago
Postfix notation
Most people don't think about how to write sums. It is clear that that the plus sign should go between the two numbers you want to add. This makes a lot of sense but when you…
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jifka (40)in #math • 7 years ago
What is the minimum of an empty set?
The question what the smallest number in an empty set is might seem like nonsense because, you know, the set does not contain any numbers but this is just the kind of thing…
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jifka (40)in #math • 7 years ago
Why 0! = 1
Most of you should be familiar with the factorial function where n factorial (written n!) is the product of the first n natural numbers, e.g. 5! = 1 * 2 * 3 * 4 * 5 = 120. This…
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jifka (40)in #introduceyourself • 7 years ago
Introducing my maths blog
Hello there! I am currently studying maths at university and I made this account to share some of the interesting things I learn there (or anywhere else) as well as maybe some…
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