How to Write Math Formulas

What is MathJax?

MathJax is a technology for beautifully displaying math formulas on web pages.

In Reading Forest, you can include math formulas in your reading notes. Simply wrap formulas with $ and they will be automatically formatted and displayed.

Important: Use Half-Width $

The $ symbols surrounding formulas must be half-width (ASCII) characters. Full-width ＄ will not be recognized as formula delimiters.

Correct (half-width $): $x^2$ → $x^2$

Wrong (full-width ＄): ＄x^2＄ → Displayed as ＄x^2＄

Basic Usage

Simple Formula

Code:

$E = mc^2$

Display:

$E = mc^2$

Pythagorean Theorem

Code:

$a^2 + b^2 = c^2$

Display:

$a^2 + b^2 = c^2$

Square Root

Code:

$\sqrt{2} \approx 1.41$

Display:

$\sqrt{2} \approx 1.41$

Usage Tips

Just wrap formulas with $ (e.g., $x^2 + y^2 = r^2$ )
Write fractions as \frac{numerator}{denominator}
Write square roots as \sqrt{content}
Greek letters: \alpha, \beta, etc.
For larger display, add \displaystyle at the beginning
Spacing is auto-adjusted, so no need to worry about details