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The case system in English is not really used anymore so it's a common for difficulty for native English learners of German to get their heads round it! In German there are 4 cases which change articles (...

Whether the noun begins with den or der depends on the case it is in (and the rule works in the same way for the articles ein/mein/etc). The case is determined by the role the noun is playing in a particu...

1. First we need to make sure we have a nicely labelled triangle, identifying which sides are the adjacent, opposite and hypotenuse. 2) Once these are labelled we will can work out which trig function ...

The first step here is to identify what to do. Differentiating the equation y = 2x^2 + 7 will result in dy/dx = 4x. Given that you know that x = 3, you can substitute x = 3 into 4x which gives you 4(3) = ...

Mutations may be inherited or may arise sponataneously, resulting in distinct differences between individuals. Thus, given that genetic material is the single determinant of phenotypical characteristics, ...