LaTeX Square Root (√) - 完整指南

The square root symbol (√) represents the square root function in mathematics.

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√

Square Root

LaTeX Code

Method 1: Using \sqrt{x}

No package required

Recommended

\sqrt{x}

Square root of x

Method 2: Using \sqrt[n]{x}

No package required

\sqrt[n]{x}

nth root of x

LaTeX Square Root 是什么？

The square root symbol (√) is used to denote the principal square root. The \sqrt command in LaTeX can also be used for nth roots using the optional parameter.

如何在 LaTeX 中使用 Square Root

方法 1：使用 \sqrt{x}

✅无需额外包

Square root of x

示例：使用 \sqrt{x}

latex

\documentclass{article}

\begin{document}

% Using the Square Root
Text with \sqrt{x}

\end{document}

方法 2：使用 \sqrt[n]{x}

✅无需额外包

nth root of x

示例：使用 \sqrt[n]{x}

latex

\documentclass{article}

\begin{document}

% Using the Square Root
Text with \sqrt[n]{x}

\end{document}

常见用途

Square Root 符号通常用于以下情况：

Square Root

Basic square root.

Code

$\sqrt{9} = 3$

Output

√9 = 3

Nth Root

Root of any degree.

Code

$\sqrt[3]{8} = 2$

Output

∛8 = 2

完整示例

Quadratic Formula with Roots

Square root in formulas

latex

\documentclass{article}
\begin{document}

The solutions are:
$$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$

The square root in the numerator:
$$\sqrt{b^2 - 4ac}$$

\end{document}