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# Mathematical Typesetting

Use keyboard shortcuts (such as CTRL+/ for fractions) to insert fillable typeset expressions:

(Click a box to highlight and fill it or press TAB to move among the boxes.) This is a simple way to enter exponents (CTRL+6), subscripts (CTRL+-) and other common expressions.

Pressing the ESC key in a notebook generates the `` symbol for keyboard shortcuts of the form ``alias`` (often notated ESCaliasESC in documentation).

Type the correct alias, and the expression changes when the closing `` is entered:

(The alias for “partial derivative” is “pd”.) Sums, integrals and other high-level expressions are generated this way:

(The alias for “definite integral” is “dintt”.) Many Greek letters and other special characters also use this form.

From a desktop notebook, you can select the “Basic Math Assistant” from the Palettes Menu for an overview of available typeset forms.

Clicking a palette button inserts a fillable expression at your cursor’s position: Use the TraditionalForm command to display any expression in traditional mathematical notation:

 In:= ⨯ `TraditionalForm[(y + 3)^2/((y - 2) (y + 5))]`
 Out= Convert existing cells to TraditionalForm using SHIFT+CMD+T:

(Expressions in TraditionalForm are still computable.)
 In:= ⨯ `Limit[(x^2 - 1)/(x - 1), x -> 0]`
 In:= ⨯ ```\!\(\*UnderscriptBox[\(lim\), \(x \[Rule] 0\)]\)( x^2 - 1)/(x - 1)```
 Out= QUICK REFERENCE: Mathematical Typesetting `»`