What is a complex number?

A complex number is one that is made up of a complex and real part, they can all be written as:
a+bi, where a and b are real numbers.
The thing that makes the number "complex" is "i", the imaginary number. "i" is the square root of -1, so if you had "square root of -4" your answer would be "root 4 times by i" or "2i".
It has many applications, particularly in Pure Mathematics.

Answered by James B. Maths tutor

4513 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

How can you integrate ln(x) with respect to x?


Integrate x^2 + 2x + 5x^-1


Where do the kinematics equations (SUVAT) come from?


Evaluate gf(-5) for the functions f(x)=3x+7, g(x)=3x^2+6x-9


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences