Formulas in a sentence

A single dollar sign encloses the formula:

Mass-energy equivalence $E = mc^2$ in the middle of a sentence.

Mass-energy equivalence $E=m{c}^2$ in the middle of a sentence.

A few common symbols

Fractions: $\frac{a}{b}$ · roots: $\sqrt{2}$ · sums: $\sum_{i=1}^{n} i$
Greek: $\alpha, \beta, \gamma$ · comparisons: $a \leq b \neq c$

Fractions: $\frac{a}{b}$ · roots: $\sqrt{2}$ · sums: ${\sum }_{i=1}^{n}i$ Greek: $\alpha ,\beta ,\gamma$ · comparisons: $a\le b\ne c$

Showing a dollar sign

Anyone writing about money escapes it:

That costs \$5.

That costs $5.

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