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Maths
A Level

integrate [xe^(-x)] with respect to x.

integrating a product of functions of x - integration by parts. integral of uv' = uv - integral of u'v. choice of u from LIATE - logs, inverse trig, algebra, trig, exponentials - choose u=x. u=x, v'=e^(-x...

ZP
Answered by Zachary P. Maths tutor
16267 Views

Two lines have equations r_1=(1,-1,2)+a(-1,3,4) and r_2=(c,-4,0)+b(0,3,2). If the lines intersect find c:

If the lines intersect the position vectors r_1 and r_2 must be equal at the point of intersection, so: (1,-1,2)+a(-1,3,4)=(c,-4,0)+b(0,3,2) which gives three equations for the three components: 1-a=c, -1...

AZ
Answered by Aleksandar Z. Maths tutor
4168 Views

find f'(x) of (x^2) + 3x + 2.

2x + 3

RP
Answered by Rohan P. Maths tutor
3659 Views

integrate xsin(x)

This question is to be done by integration by parts because it has "two types" of integrals. To perform integration by parts, we need to first split the function into its two parts, producing x ...

SF
Answered by Sam F. Maths tutor
5535 Views

What are the advantages of using numerical integration (Trapezium rule, Simpson's rule and so on) over direct integration?

Numerical methods are particularly useful to solve complex problems which are sometimes difficult or impossible to solve analytically. It is also a quicker way of solving the problem rather than using for...

PA
Answered by Priyanka A. Maths tutor
14815 Views

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