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Find the derivative of the equation y = x*ln(x)

y = x*ln(x)Let u = x, v = ln(x) => du/dx = 1, dv/dx = 1/x=> y = uv=> dy/dx = (du/dx)v + u(dv/dx) USING PRODUCT RULETherefore y = ln(x) + 1
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Answered by Owen B. • Maths tutor
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When I write comparative essays, I have the tendency to talk about one text more than the other which restricts my marks. What can I do to make sure I address both texts equally and make a strong comparison?

When writing a comparative essay, it can be tempting to favour the less challenging of the texts and try and discard the one that we have less to say about. This is an easy mistake to make but for most exam ...
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How do you sketch a quadratic graph?

There are three things to think about when sketching a quadratic graph: whether its a 'u' or 'n' shape, where it cuts across the y axis and where it cuts across the x axis (if it does). Let's look at an exam...
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Answered by Sita P. • Maths tutor
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A class has 30 students. The mean height of the 14 boys is 1.52m. The mean height of all the students is 1.48m. Work out the mean height of the girls.

The mean height of all the students is 1.48m which means that the total height of all the students is 30 * 1.48m = 44.4m. The contribution due to the boys is 14 * 1.52m = 21.28m. Therefore the total height o...
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Answered by William D. • Maths tutor
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How do you answer secondary source questions (Paper 1) at A Level?

There are several ways to approach source questions, but the most effective way is to give an overall summary of the source followed by an analysis of 3 points the source makes. 1) Read the source and DO NOT...
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Answered by Sam T. • History tutor
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