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The stationary point of a curve is where it changes direction, that is the gradient goes from pos...
To prove this we must use a neat mathematical technique called induction.
Induction works in ...
With a problem like this, the key is to split it down into component parts.
We will treat the star as a perfec...
In chemistry the mole (mol) is a basic unit to describe a quantity of substance based on the number of particles (atoms or molecules) that it contains.
The nu...
Homeostasis is the maintenance of the internal environment to a constant state, despite changes to the external environment. Examples of conditions in the body which must be kept constant include body...
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