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-cos(2x)/(x²) - 2sin(2x)/(x)

For questions like these it's easier to first rewrite z as z=x+iy. 

Once we plug this back into the original equation we get x-iy-i = 2ix-2y+1

Rearranging both sides to group together the re...

If you have an excuse to use fancy grammar, use it! You must read through your work with a critical eye, or think critically before beginning a task, and work out how you can best formulate sentences to s...

Semantics refers to meaning, whereas pragmatics refers the deeper inferred meaning. For example, if I were to ask you a simple question such as, “Would you like a cup of coffee?”, the semantic meaning of ...

Let's begin with the definition of stress:

Stress = F/A

First, we need to recall that the force the weight of the crate will exert on the cable will be equal to:

F= m*g

We know...