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How would you differentiate f(x)=3x(2x-1)^2

This question is really straight forward By using the Chain rule: f'(x) = uv' + u'v. let u=3x, so u'=3 let v=(2x-1)^2, so v'=2x2(2x-1)=8x-4 Now, we put this expression altogether: As f'(x) = uv' + u'v f'(x)=...
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Answered by Ruihang Z. • Maths tutor
7002 Views

How do I write a good introduction?

The key to this is remembering that introductions rarely score additional marks on exams, and so a short but sweet introduction is perfectly fine! The most important thing is to avoid phrases like "in t...
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Answered by Imogen S. • English tutor
2122 Views

How do I memorise quotes for the closed book exams?

Remember that you only need a couple of quotes per point, and that the examiners prefer to see well-selected and relevant points rather than a huge amount of quotes with no link to the question! My advice wo...
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4275 Views

What is the multiplier effect?

The best way to explain the multiplier effect is through an example. Imagine that the government invested £100m in building a new hospital. They would need to employ lots of staff to build and work in the ho...
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Answered by Linden S. • Economics tutor
5258 Views

The first three terms of a sequence are a, b, c. The term-to-term rule of the sequence is 'Multiply by 2 and subtract 4'. Show that c = 4(a – 3).

As the answer is given in the question, it's really important that you lay out your working carefully to give a convincing account as to how you got from the question to the answer. Here we have a sequence. ...
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Answered by Robin B. • Maths tutor
13159 Views