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Why do we need to differentiate?

Differentiation is a very important tool for mathematicians. Although finding the gradient of a line can seem to lack a point, it does have some very important applications. For example, in mechanics the vel...
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Answered by Andrew G. • Maths tutor
10157 Views

A curve has parametric equations x = 2 sin θ, y = cos 2θ. Find y in terms of x

y = cos2θ . 2) cos2θ = 1 - 2sin²θ. 3) x = 2sinθ. 4) x² = 4sin²θ. 5) (1/2)x² = 2sin²θ. 6) y = 1 - (1/2)x².
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Answered by Nick B. • Maths tutor
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Have you taught before?

I have experience teaching in my own country about the subject.
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Answered by Rusab A. • Maths tutor
4576 Views

I struggle with integration, and don't understand why we need to do it

First, my approach is to ask student to count the squares on the area under a curve. This process is tedious, and only gives an estimation. Next, I show them the formula to do integration, and immediately th...
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Answered by Han Y. • Maths tutor
5226 Views

Below is a question from the Edexcel Maths Core 1 textbook, Solve the equation x^2 + 8x + 10 = 0 using completing the square.

Before we get to solving the equation, let’s first review the method completing the square. Completing the square is simply to convert an equation into the form of (x±a )^2, so it is possible to solve for x....
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Answered by Lily Z. • Maths tutor
6733 Views