Top answers

Maths
A Level

Let f(x)=x^3 - 2x^2 + 5. For which value(s) of x does f(x)=5?

Although it can be tempting to dive straight into such a question, its always useful in mathematics to take a step back and assess the question before scribbling down panicked answers.

For inst...

Answered by Jed G. Maths tutor
3047 Views

Integrate lnx

This question often throws maths students off fairly easily as they are generally not taught the integral of lnx, and do not usually realise that integration by parts can be used for anything, as you can ...

Answered by Owen M. Maths tutor
2868 Views

Find the coordinates of the stationary point of the graph y = 3x^2 - 12x

Firstly, we need to differentiate the equation to find an equation for the gradient of the line.dy/dx = 6x-12We know the original graph was quadratic, and therefore only has one stationary point. This is ...

Answered by Jack M. Maths tutor
5801 Views

I struggle to simplify the following equation: (see answer)

3l2mn + nl2m - 5mn2l + l2nm + 2n2ml - mn2
The first step is to ask yourself if there is anything that could help you simplify the equ...

Answered by Luc S. Maths tutor
2963 Views

Integral of Cosec(x)/Sec(x) (i.e. Use of trignometric identities)

∫  Cosec (x)/Sec (x) dx∫  [1/Sin (x)]/ [1/Cos (x)] dx∫  [1/Sin (x)] * [Cos (x)] dx∫  Cot (x)= ln [Sin (x)] + c

Answered by Sean M. Maths tutor
6540 Views

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