problem
A brief introduction to complex numbers
Age
14 to 18
Challenge level
In this problem, we define complex numbers and invite you to explore what happens when you add and multiply them.
problem
A brief introduction to the Argand diagram
Age
14 to 18
Challenge level
Complex numbers can be represented graphically using an Argand diagram. This problem explains more...
problem
Complex squares
Age
16 to 18
Challenge level
What happens when we square complex numbers? Can the square of a complex number be real?
problem
Thousand words
Age
16 to 18
Challenge level
Here the diagram says it all. Can you find the diagram?