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First, you need to relax and stay calm which might seem difficult in an exam situation but remember when the author this piece it is unlikely they wrote it for student sitting in an exam hall. Then simply re...

Konjunktiv I is used to indicate reported speech (when you are telling someone what somebody else has said). However, Konjunktiv I is seen as very formal, and so it is rarely used in spoken German. You will ...

First, let's assume that sqrt(2) is rational . That is, it can be expressed in the form a/b, where a and b are integers and the fraction is simplified as far as possible. So we have sqrt(2) = a/b --> 2 = ...

A polar coordinate system is just another method to determine a position of a point in space just like the cartesian coordiante system does; which hopefully you are confident with now. At A-level all you nee...

First thing to notice here is that this question tells us exactly what method they want us to use, subsitution, and what to substitute. Hence the first step is to turn the integral provided which is currentl...