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x 2 - 9x ≤ 36 1. Draw a graph. y = x 2 - 9x and y = 36 2. Find the points of intersection by solving x 2 - 9x = 36 x 2 - 9x = 36 x 2 - 9x - 36 = 0 (x - 12)(x + 4) = 0 Therefore, the lines intersect at x = 12...

1. The Essay Question The first thing you should do when you get into the exam is to copy out the essay question title onto the top of your answer sheet. It may waste a minute or two of your answer time but ...

People doing mathematics at A-Level will be familiar with the concept of using x and y coordinates in the cartesian coordinate system. But introducing the idea of the polar coordinate system can be confusing...

A definite integral is actually a numerical value, which the represents the area under a graph between two points. For example, if you integrated f(x) between two values (lets call them a and b), the answer ...

There is no definitively correct answer on revision. All students learn and revise in a variety of different ways. However, my advice when it comes to History at A-Level and even during my studies at undergr...