Jakub Marian’s Educational blog

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So, thus, therefore, and hence in English
Since you are reading this article in English, the odds are you already know what the conjunction “so” means. You probably also know that (...)
October 5, 2017 – Jakub MarianEnglish
‘October’ in European languages
In the Roman calendar, the year began with March, not January, so October was the eighth month of the yearhence the Latin name october, (...)
October 2, 2017 – Jakub MarianMaps
Average hours worked per worker per week in Europe
The following map shows the number of hours workers in each country work per week, on average, including both full-time and part-time (...)
September 27, 2017 – Jakub MarianMaps

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Integral of $\cot(x)$
To integrate cot(x), recall that cot(x) = cos(x)/sin(x), so ∫ cot(x) dx = ∫ cos(x)/sin(x) dx. (...)
September 21, 2017 – Jakub MarianMathematics
Corruption Perception Index in Europe 2016
Corruption Perceptions Index of European countries
A map shows the Corruption Perception Index of European countries published by Transparency International. (...)
September 19, 2017 – Jakub MarianMaps
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Pronouns in Esperanto
The system of pronouns in Esperanto is very similar to the English one: mi (I), ni (we), vi (you), li (he), ŝi (she), ĝi (it), ili (they). (...)
September 16, 2017 – Jakub MarianEsperanto
Number of patent applications per capita by region in Europe
The number of patent applications is a good indicator of how innovative businesses in different regions are. Without further ado, let’s (...)
September 7, 2017 – Jakub MarianMaps
Integral of $\sin(x)\cos(x)$
The function $\sin(x)\cos(x)$ is one of the easiest functions to integrate. All you need to do is to use a simple substitution $u = (...)
September 6, 2017 – Jakub MarianMathematics
‘September’ in European languages
The English word “September” comes from Latin september, which means “the seventh month”. This seems strangewe all know that September (...)
September 4, 2017 – Jakub MarianMaps
August in European languages
‘August’ in European languages
The English name “August” comes from Latin augustus, named in honour of Augustus, the first Roman emperor and great-nephew and adoptive (...)
August 1, 2017 – Jakub MarianMaps