Integrals, Sums & Limits

Integrals

Integral expression can be added using the \int_{lower}^{upper} command.

Note, that integral expression may seems a little different in inline and display math mode.

LATEX code	Output
Integral \(\int_{a}^{b} x^2 \,dx\) inside text
\[ \int_{a}^{b} x^2 \,dx \]

Multiple integrals

To obtain double/triple/multiple integrals and cyclic integrals you must use amsmath and esint (for cyclic integrals) packages.

LATEX code	Output

Sums and products

Like integral, sum expression can be added using the \sum_{lower}^{upper} command.

LATEX code	Output
Sum $\sum_{n=1}^{\infty} 2^{-n} = 1$ inside text
\[ \sum_{n=1}^{\infty} 2^{-n} = 1 \]

In similar way you can obtain expression with product of a sequence of factors using the \prod_{lower}^{upper} command.

LATEX code	Output
Product $\prod_{i=a}^{b} f(i)$ inside text
\[ \prod_{i=a}^{b} f(i) \]

Limits

Limit expression can be added using the \lim_{lower} command.

LATEX code	Output
Limit $\lim_{x\to\infty} f(x)$ inside text
\[ \lim_{x\to\infty} f(x) \]