Pascal’s Triangle
Expanding very large powered numbers can be quite tedious, since the expansion requires a lot of expanding over and over again. For example trying to expand (x+1)5 and (x+1)7, this would take a very...
Monthly Archive: July 2011
Quadratic Formula
Using the quadratic formula is one way of solving quadratic equations. Another way of solving quadratic equations is by factorising or factorisation. It is very important in this lesson to be able to solve...
Binomial Expansion
This is a continuation from the Pascal’s triangle lesson. It would be good for your benefit to go through it before attempting this. The numbers in Pascal’s triangle can be generated using the following...
Rates of Change
Sometimes we want to know how things change over time or how another quantity is changing while another is changing, for example if the radius is changing over time what is the rate of...
Significant figures
Rounding off numbers to a certain degree of accuracy is often necessary in many applications. For example 5,625,000 can be rounded off to one significant figure to make the figure simple or easy to...
Sketching Graphs
In this topic we shall be exploring how to draw graphs. But before we do that let’s look at the different types of graphs that you can sketch. You must know these graphs by...
Gradient of a Straight Line
The gradient is the result of the division between the length on the y-axis and the x-axis covered by the line or very simply the value representing the slopeness of the line. Here we’re...