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Sometimes it would be enough to factorise the polynomials (in case the limit we are trying to compute is writen in terms of polynomials) and eliminate common factors in the quotient. However, most of them...

There are, mainly, three ways of doing it easily:
Substitution: It consists in modifying one of the equations in such a way that x is expressed in terms of y  (or y in terms of x) and then substitut...

1/6 * (4x+3)^3/2

Imaginary numbers can seem very daunting when you first encounter them. The name is the most confusing part; how can a number be imaginary? Do imaginary numbers really exist? You can think of the set of i...

It is always helpful to start by drawing a diagram with a Real and Imaginary axis then plotting the number (in our case 1+2i) on the diagram and drawing a line from the origin to our point. Remember the m...