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Why is Kinetic Energy mv^2/2?

Whilst this proof is beyond the scope of A level physics, it is well within the scope of A level Maths as it relies solely on the chain rule.First let us note that Fx = W where F is force, x is distan...

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Answered by Vandan P. Physics tutor
6979 Views

How to sum an arithmetic progression?

Whilst it is very easy to just plug the numbers into the formula you are given on your formula sheet there is a much faster and more intuitive method of doing this. If we have n numbers beginning at a wit...

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Answered by Vandan P. Maths tutor
6002 Views

What is sin(x)/x for x =0?

I'm going to show the answer to this question in two different ways. - The first is perhaps more obvious but the second is much more elegant.Taylor series expansion: Using Taylor expansion (or your trusty...

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43569 Views

The price of a TV is reduced in a sale by 30%. If the sale price is £280 what was the original price?

A question from 13 + specimen paper.

After the price of TV is reduced 30 % the price is £280. This means that £280 is 70% of the original price.

Therefore if you make an equation 280 x...

TK
Answered by Taeseong K. Maths tutor
17021 Views

Expand (2x-3)(4x+4) using the FOIL method.

Question: 

Expand (2x-3)(4x+4) 

We will be using the FOIL method. FOIL is an ancronym: 

F=first

O=outside

I=inside

L=last

So, to begin, we start...

MW
Answered by Miriam W. Maths tutor
10330 Views

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