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Maths
A Level

∫ log(x) dx

Using "Integration by parts" or "reverse chain rule" .
Recall formula for intergration by parts: "∫f'(x) g(x) dx = f(x)g(x) - ∫f(x)g'(x)dx"
Then set f'(x) = 1, g(x)...

MT
Answered by Michael T. Maths tutor
49173 Views

Differentiate f(x) = 2xlnx.

Use the chain rule: f'(x) = v(du/dx) +u(dv/dx).

Let u = 2x, du/dx = 2, v = lnx, dv/dx = 1/x

Using this information: f'(x) = 2lnx + 2x/x

This simplifies to f'(x...

TV
Answered by Tom V. Maths tutor
22872 Views

∫(1 + 3√x + 5x)dx

For each term the aim is to raise the power of x by 1 and divide by the new power. 

MT
8989 Views

How do you find the equation of a line at a given point that is tangent to a circle?

This question may start by giving you an equation, which you need to write in the form of the standard equation of a circle (usually by completing the square). This allows you to see the centre of the ...

TW
Answered by Tom W. Maths tutor
5159 Views

What's the integral of x^2 +3/x, with respect to x?

A: x3/3 + 3ln(x) + A.

Step-by-step solution:

Integral (x2+3/x dx) =

[as integrals preserve sums]

integral ...

MG
Answered by Marco G. Maths tutor
5599 Views

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