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The derivative is calculated by multiplying by the degree of the variable then taking taking away 1 from the degree.So to calculate the derivative of x^2 we multiple the variable (which is x) by the degre...

To solve simultaneous equations you need to cancel out variables like x and y one at a time to solve for the other. In the edexcel GCSE 2017 paper this question came up: solve simultaneously x²...

Answer: 17
First must find the nth term = dn + b (difference x term number + the back track)In this instance the difference is 3 and the backtrack, term before the first is 2Therefore the nth term is...

Line 1 : y = 3x -2. Equation of a line general formula : y = mx + c , where m = gradient. Therefore, for y = 3x - 2, m = 3 and therefore the gradient = 3. Line 2 : 3y - 9...

There are a few different ways to approach this problem but the simplest and most easy to visualise solution comes from sketching the curve y = x² + 5x - 24 and identifying the range of x-value...