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If I put £500 in the bank with an annual interest rate of 3% how much money will I have earned in 2 years?

Too calculate this we need to increase to total amount of money in the bank by 3% year on year for 6 years. Year 0 £500 Year 1 £500 x 1.03 = £515 Year 2 £515 x 1.03 = £530.45 Notice we use the running total ...
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Answered by Ahmad T. • Maths tutor
10477 Views

How do I find the turning points of a curve?

At turning points, the gradient is 0. Differentiating an equation gives the gradient at a certain point with a given value of x. To find turning points, find values of x where the derivative is 0. Example: y...
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Answered by Shannon G. • Maths tutor
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How do I solve a quadratic equation by factorising?

A quadratic equation is one that includes x 2 as the highest power of x. Factorising is achieved in 3 steps. Let’s consider the example x 2 -3x-3=1 1) Put the equation into the form ax 2 +bx+c=0 x 2 -3x-4=02...
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Answered by Shannon G. • Maths tutor
5574 Views

How do I solve equations like 3sin^2(x) - 2cos(x) = 2

To solve equations like this we need to get the equation in terms of one trigonometric function, ie one of sin(x), cos(x) or tan(x) It is usually easiest to get everything in terms of whatever the linear par...
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Answered by Elliot B. • Maths tutor
23207 Views

How do I expand brackets by multiplication?

It's worth remembering FOIL: First, Outside, Inside, Last.Say we have the following: (a+b)(c+d), where a,b,c and d are positive integers. Using FOIL, we have: (First) + (Outside) + (Inside) + (Last) ac + ad ...
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Answered by Liam D. • Maths tutor
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