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Maths
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How do I add two fractions? (plus example)

Adding (and subtracting) fractions is more difficult than multiplying them because we need to make sure that the denominators (bottom numbers) are equal in both fractions.

To do this, we may n...

JB
Answered by Jenny B. Maths tutor
4988 Views

How do I expand (x+a)(x+b)? (plus example)

The key to understanding expanding brackets is to understand that we need to multipy EVERYTHING in the first bracket by EVERYTHING in the second bracket.

We can think of the calculation

JB
Answered by Jenny B. Maths tutor
16276 Views

How do I integrate by parts?

The integration by parts formula takes the form:

 

int(uv') = uv - int(vu') 

 

where v' = dv/dx and u' = du/dx

A lot of the art of using the integration by part...

CB
Answered by Chris B. Maths tutor
5273 Views

How do you differentiate by first principles?

Firstly, what are we trying to achieve by differentiating a function? Differentiation allows us to compute the rate of change of a function at any point along ...

DB
Answered by Daniel B. Maths tutor
6934 Views

What is 'Chain Rule' and why is it useful?

The chain rule is most commonly seen in Leibniz's notatio...

TK
Answered by Tully K. Maths tutor
5779 Views

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