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To get our head around a problem like this is always very useful to think of a few examples. First supposed that this party is a bit borining and there are only 2 people, then by assumption they know each...

To help explain we will use the following example: Show that cos(2x) = 2cos²x - 1. Hence solve the equation cos(2x) + cosx = 0 for 0^o < x < 360^o. Answer: We know fro...

First: Start with a comparison with English (different tenses for the present in English vs. A single one in German)

Second: Evoke the difference between strong and weak verbs in German, do a paral...

The best way to memorise all the grammatical exceptions in the Russian language is obviously to practice them. However, it is also very helpful to write a small paragraph with sentences including all the ...

(NOTE: This is an "evaluate" question so make sure to have a counterpoint i.e. HOWEVER...)

Labour productivity = output per worker over a period of time (e.g. 2 cars a day). Labour produc...