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Reverse Polish Notation (or RPN) is simply a different mathematical way of laying out equations, take for example the expression:
7+ 9
The layout is <First number> <Operator> <Sec...

Blood glucose homeostasis involves maintaining the levels of blood glucose within a very narrow limit around a set point (90mg 100cm-3). This is done via hormonal regulation. On one hand, insulin which is...

On History Paper 1, you'll be asked to analyse a number of sources for their "origin, purpose, values and limitations". When done correctly, these questions can be easy points as long as you...

Creating a really gripping introduction for your essay is actually easier than you may think! Really, you only need three sentences arranged in a particular way and you'll be able to draw your reader in i...

A potential divider is essentially a series circuit. The characteristics of a series circuit is such that voltage from the source (a battery for example) gets split across the resistors according to t...