# log of -ve number is not possible.

Note by Rajat Jain
4 years, 10 months ago

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in $$...$$ or $...$ to ensure proper formatting.
2 \times 3 $$2 \times 3$$
2^{34} $$2^{34}$$
a_{i-1} $$a_{i-1}$$
\frac{2}{3} $$\frac{2}{3}$$
\sqrt{2} $$\sqrt{2}$$
\sum_{i=1}^3 $$\sum_{i=1}^3$$
\sin \theta $$\sin \theta$$
\boxed{123} $$\boxed{123}$$

Sort by:

A note: logarithms can be extended for negative numbers if you consider complex numbers. See here.

- 4 years, 10 months ago

More accurately, logarithms can be extended to all non-zero complex numbers.

You have to be careful, as it is no longer a one-to-one function, but multivalued (which some people do not consider as a function).

Staff - 4 years, 10 months ago

log of a negative number is possible for some negative bases. However, the graph would break several times while sketching y=log x ( x<0 ) for a particular negative base. Thus we aptly say log of negative number is not possible.

- 4 years, 10 months ago