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Integrate x*cos(x)

As there are 2 x terms in the integral we will use integration by parts. Remember; ∫u*(dv/dx)dx = uv - ∫v*(du/dx)dx (found by integrating the product rule). From xcos(x) we need to decide which x term will b...
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Answered by Rebecca W. • Maths tutor
9601 Views

Should I sit the BMAT in September or November?

Pros of September • You know you score earlier. This is a benefit because if the BMAT goes badly you can just apply to one or none at all. • Doesn't affect school work. With the way A-levels have changed, yo...
MS
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"Solve cos(3x +20) = 0.6 for 0 < x < 360" - why are there more than one solution, and how do I find all of them?

The important part of this question is to really understand what the cosine function looks like, many students will use their calculators to find arccos(0.6) = 53.13 degrees, but not find the other solutions...
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Answered by Martyn F. • Maths tutor
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What's the point of writing my mathematics well if I don't get extra marks for it?

Although strictly speaking you get no extra marks for writing out your mathematics clearly and logically, getting into the habit of doing so can help your work in a lot of ways: 1. You can read your work bac...
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Answered by Oliver B. • Maths tutor
4256 Views

'The alliance system was the most important cause of the First World War'. Discuss.

Answering an essay question: three elmements: 1) deconstruct question, 2) anlysis, 3) facts 1) consider: type - Discuss, evaluate quotation, (in this case) consider given factor and compare relative signific...
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Answered by Conrad Y. • History tutor
5999 Views