The formula editor is opened with menu `Insert`

->`Object`

->`Formula...`

. Your formula is then composed graphically, selecting the kind of operator from the drop-down menu in the left panel and clicking on the required operator. Operands are typed to replace the placeholders in the bottom editing pane.

Clicking in the upper document pane brings you back to standard document editing. Double-clicking on the formula reopens the formula editor for modification.

However, composition rules are not immediately obvious, so that you are strongly advised to read the Math user guide which can be downloaded from the LO site in ODT or PDF format.

Built-in help (`F1`

) can afterwards be used as a quick reminder.

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