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★ interactive · cheatsheet

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Edit the source on the left, then click a cheatsheet row to load it into the preview.

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\sum_{i=1}^{n} i = \frac{n(n+1)}{2}

cheatsheet

fractions & roots

source	renders as	note
`\frac{a}{b}`	$\frac{a}{b}$	standard fraction
`\sqrt{x}`	$\sqrt{x}$	square root
`\sqrt[3]{x}`	$\sqrt[3]{x}$	nth root

sums, products, integrals

source	renders as	note
`\sum_{i=1}^{n} i`	$\sum_{i=1}^{n} i$	finite sum
`\prod_{k=1}^{n} k`	$\prod_{k=1}^{n} k$	product
`\int_0^1 x \, dx`	$\int_0^1 x \, dx$	definite integral

limits & calculus

source	renders as	note
`\lim_{x \to 0}`	$\lim_{x \to 0}$	limit
`\frac{dy}{dx}`	$\frac{dy}{dx}$	derivative
`\partial_x f`	$\partial_x f$	partial derivative
`\nabla f`	$\nabla f$	gradient

logic, sets, relations

source	renders as	note
`\forall x \in S`	$\forall x \in S$	for all in a set
`\exists x`	$\exists x$	there exists
`A \subseteq B`	$A \subseteq B$	subset
`a \equiv b \pmod{n}`	$a \equiv b \pmod{n}$	congruence

greek

source	renders as	note
`\alpha \beta \gamma`	$\alpha \beta \gamma$	lowercase
`\Sigma \Pi \Omega`	$\Sigma \Pi \Omega$	uppercase
`\theta \phi \psi`	$\theta \phi \psi$	common variables