You are here:

Geometry/Scientific Notation for Complex Numbers

Advertisement


Question
QUESTION: Dear Prof Azeem

http://en.wikipedia.org/wiki/Scientific_notation
http://en.wikipedia.org/wiki/Complex_number

A complex number is a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit, where i2 = −1.

Is it possible to also have a scientific notation for complex numbers ?.

Examples :


6720000000 + 4i
1991230000000 + 6i
18.7 + 2i


Awaiting your reply,

Thanks & Regards,
Prashant S Akerkar

ANSWER: Hi Prashant,

It is possible to use scientific notation for either the real or imaginary part or both.  Scientific notation is just that: notation.  It does not matter what it is representing.  Any number can be represented in scientific notation, in theory.

Thanks for asking,
Azeem

---------- FOLLOW-UP ----------

QUESTION: Dear Prof Azeem

http://en.wikipedia.org/wiki/Scientific_notation
http://en.wikipedia.org/wiki/Complex_number

1. Can this also be taken as a valid example and written with scientific notations ?.

Here a & b are large numbers

6720000000 + 1991230000000i

Similarly example of small numbers

0.0000000000345 + 0.34562222222222i

i.e. a+bi complex form where a,b are real numbers.

2. The mathematical computations viz Multiplication, Division of two complex numbers where a & b for very large or very small numbers with use of scientific notation (10^9 OR E9) can become complex ?.

3. Is it possible also to compute for exponentiation where base and exponent are complex numbers

for example :

http://en.wikipedia.org/wiki/Exponentiation

Base = 6720000000 + 1991230000000i
Exponent = 0.0000000000345 + 0.34562222222222i

Awaiting your reply,

Thanks & Regards,
Prashant S Akerkar

Answer
Hi Prashant,

All the operations you mentioned can be performed using real or complex numbers written in scientific notation.  The justification is the same as above: scientific notation is merely a different way of writing the same number.


Regards,
Azeem

Geometry

All Answers


Answers by Expert:


Ask Experts

Volunteer


Azeem Hussain

Expertise

I welcome your questions on algebra, 2D and 3D geometry, parabolic functions and conic sections, and any other mathematical queries you may have.

Experience

4 years as a drop-in and by-appointment tutor at Champlain College. Private tutor for dozens of clients over the past 8 years.

Publications
CALPHAD: Computer Coupling of Phase Diagrams and Thermochemistry

Education/Credentials
Bachelor of Science, Major Mathematics and Major Economics, McGill University, 2014. Diploma of Collegiate Studies; Pure and Applied Science, Champlain College Saint-Lambert, 2010.

©2016 About.com. All rights reserved.