QUESTION BY QUESTION: This question tests basic arithmetic skills. You can use your calculator, but also do a quick mental check on your answer. Most questions take the form of the solving or ...

Each paper lasts 150 minutes, with six questions to be answered and 300 marks available. Allow 20-23 minutes per question, with 10 minutes at the start to read the paper. In order to gain an overall ...

As a tangent is a straight line it is described by an equation in the form \(y - b = m(x - a)\). You need both a point and the gradient to find its equation. You are usually given the point - it's ...

One simple equation can generate a vast diversity of natural shapes, a Belgian biologist has discovered. The Superformula, as its creator Johan Gielis has christened it, produces everything from ...