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This exam question is asking you to take a general statement and apply it to the text you have studied. It's also an opportunity to show your close reading skills and pick out interesting linguistic and s...

The important thing is not to panic! It doesn't matter if you don't know or can't remember a specific word given in the passage. The exercise is designed primarily to test your knowledge and usage of gram...

The verb 'to go' is so much more complicated in Russian than in English, but once you know the rules you can easily work out which verb to use in any situation, just by applying logic. Both 'ходить' and '...

First let a = b = x such that:          

          cos(a + b) = cos(a)cos(b) - sin(a)sin(b)

becomes:

          cos(x + x) = cos(x)cos(x) - sin(x)sin(x)

Leading to:

     ...

Simple harmonic motion is defined as a form of periodic motion in which a point or body oscillates in such a way that the acceleration of the point or body is directly proportional to its displacement fro...