# Superscript and Subscript Test

This document tests superscript and subscript syntax supported by Yank Note.

## Superscript (`^text^`)

This is the 29^th^ of the month.

E = mc^2^

x^n^ + y^n^ = z^n^

2^10^ = 1024

a^b+c^

## Subscript (`~text~`)

Water is H~2~O.

Carbon dioxide: CO~2~

The chemical formula for sulfuric acid is H~2~SO~4~.

x~1~, x~2~, x~3~, ..., x~n~

a~ij~ represents the element in row i, column j.

## Combined Usage

The formula a~n~ = r^n^ demonstrates both subscript and superscript.

Chemical reaction: 2H~2~ + O~2~ → 2H~2~O

x~i~^2^ + y~i~^2^ = r^2^

## Superscript and Subscript in Context

In physics, the speed of light is approximately 3 × 10^8^ m/s.

The general term of a geometric sequence: a~n~ = a~1~ × r^n-1^

Avogadro's number: 6.022 × 10^23^ mol^-1^