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Integrate x*sin(x) with respect to x.

We integrate by parts: u=x   u'=1;  v'=sin(x)  v=-cos(x) integral(xsin(x)dx) = -xcos(x) + integral(cos(x)dx) = -x*cos(x) + sin(x) + C where C is a constant.

JR
Answered by James R. Maths tutor
14596 Views

How do I do binomial expansions for positive integer n?

The general method for (a+b)^n is: 1)write out pascals triangle (see whiteboard) and stop at the nth row. Write this on a line. 2)write down the powers of a in ascending order (and simplify) 3)write down ...

DR
Answered by Daniel R. Maths tutor
3831 Views

How do I work out what integration method I should use to solve an integral?

A-Level Mathematics is about a wide range of topics, among which Integrating is key!

While differentiation is a technique, whereby a set of rules can be used to approach problems, integration is an...

LC
Answered by Luigi C. Maths tutor
12220 Views

How should I structure a personal statement?

The basic structure of a personal statement is roughly 5 paragraphs with 80% of the statement focussed on academics and 20% on extra-curricular, with this 20% normally covered in the final paragraph. For ...

AM
6964 Views

Describe the structure and function of the myelin sheath?

The myelin sheath is a fatty substance which surrounds and insulates neuron axons (i.e. it does not allow potassium or sodium ions to pass through it), which allows fast propagation of action potentials a...

EC
Answered by Emma C. Biology tutor
17749 Views

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