Ln in LaTeX

The LaTeX command for ln is \ln — natural logarithm.

\ln

Operators · no package needed

How to type Ln

Write \ln inside math mode — that is, between $…$ for inline math or in a \[ … \] / equation block for display math. It is part of core LaTeX math, so no extra package is required.

Example

$\ln_{i=1}^{n} x_i$

\ln_{i=1}^{n} x_i

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Related Operators symbols

\sin\cos\tan\arcsin\arccos\arctan\sinh\cosh\tanh\cot\sec\csc\exp\log

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FAQ

How do you write ln (ln) in LaTeX?

Use \ln in math mode — it needs no extra package. For example, $\ln_{i=1}^{n} x_i$.

Which package provides \ln?

None — \ln is built into LaTeX's math mode, so no extra package is required.

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