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How can I improve my score?

Maths is all about practise. Once you have covered a topic, you should do as many practise questions as possible to help you understand the topic. Always show your working out on your exam paper to gain maxi...
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Answered by Samah L. • Maths tutor
4875 Views

The curve C has the equation y = 2x^2 -11x + 13. Find the equation of the tangent to C at the point P (2, -1).

The first step is to differentiate the equation of the curve in order to find the gradient of the tangent at the curve. Remember that when differentiating polynomials, we multiply the index of the variable x...
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Answered by James Y. • Maths tutor
17539 Views

A curve has the equation (x+y)^2 = xy^2. Find the gradient of the curve at the point where x=1

The first step is to find dy/dx. To do this you must first expand the brackets. x 2 + y 2 + 2xy = xy 2 Then differentiate each term with respect to x. dy/dx of (x 2 ) = 2x dy/dx of (y 2 ) = 2y(dy/dx) (Using ...
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Answered by Motunrayo O. • Maths tutor
17860 Views

How do I solve this inequality: x^2>2x ?

Solve the equation x 2 =2x (solve x 2 -2x=0 by factorisation). Sketch the graphs y=x 2 and y=2x, using standard graph shapes. Look at the sketch to see for which values of x the graph y=x 2 lies above y=2x; ...
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Answered by Jan K. • Maths tutor
7663 Views

Differentiate with respect to X: x^2 + 2y^2+ 2xy = 2

Assuming the correct tools of differentiation have been taught, we can tackle each term seperately and then rearrange to have dy/dx as the subject. Taking a look at the first term, x^2, differentiating this ...
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Answered by Callum O. • Maths tutor
44711 Views