Update learn.md

Author: Open-Deep-ML

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 ## Solution Explanation
 
 Add intuition, math, and step-by-step reasoning here.
+
+### Writing Mathematical Expressions with LaTeX
+
+This editor supports LaTeX for rendering mathematical equations and expressions. Here's how you can use it:
+
+1. **Inline Math**: 
+   - Wrap your expression with single `$` symbols.
+   - Example: `$E = mc^2$` → Renders as: ( $E = mc^2$ )
+
+2. **Block Math**:
+   - Wrap your expression with double `$$` symbols.
+   - Example: 
+     ```
+     $$
+     \int_a^b f(x) \, dx
+     $$
+     ```
+     Renders as:
+     $$
+     \int_a^b f(x) \, dx
+     $$
+
+3. **Math Functions**:
+   - Use standard LaTeX functions like `\frac`, `\sqrt`, `\sum`, etc.
+   - Examples:
+     - `$\frac{a}{b}$` → ( $\frac{a}{b}$ )
+     - `$\sqrt{x}$` → ( $\sqrt{x}$ )
+
+4. **Greek Letters and Symbols**:
+   - Use commands like `\alpha`, `\beta`, etc., for Greek letters.
+   - Example: `$\alpha + \beta = \gamma$` → ( $\alpha + \beta = \gamma$ )
+
+5. **Subscripts and Superscripts**:
+   - Use `_{}` for subscripts and `^{}` for superscripts.
+   - Examples:
+     - `$x_i$` → ( $x_i$ )
+     - `$x^2$` → ( $x^2$ )
+
+6. **Combined Examples**:
+   - `$\sum_{i=1}^n i^2 = \frac{n(n+1)(2n+1)}{6}$`
+     Renders as:
+     $\sum_{i=1}^n i^2 = \frac{n(n+1)(2n+1)}{6}$
+
+Feel free to write your own mathematical expressions, and they will be rendered beautifully in the preview!