Top answers

Maths
A Level

How do I multiply complex numbers?

A complex number has the form a+bi. We call a the 'real' bit (ie. the bit on a regular number line) and b is the 'imaginary bit. 
Multiplying complex numbers is done in a very similar way to multiply...

CB
Answered by Chloe B. Maths tutor
5351 Views

What are complex numbers?

A complex number is a number made up of a real and imaginary part. 

CW
Answered by Chris W. Maths tutor
6196 Views

How do you prove that (3^n)-1 is always a multiple of 2?

Proof by Induction: The method of Proof by Induction is a simple but very powerful t...

SA
Answered by Saleem A. Maths tutor
19165 Views

How do you add or subtract complex numbers?

A complex number has the form a+bi. We call a the 'real' bit (ie. the bit on a regular number line) and b is the 'imaginary' bit.
To add or subtract complex numbers you just add the real bits of both...

CB
Answered by Chloe B. Maths tutor
5541 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...

VP
Answered by Vandan P. Maths tutor
5838 Views

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