In the Vectera whiteboards you can add several options: drawings, geometrical shapes, text and also formulas. To add a formula, you can click on the sum symbol (Σ = sigma) on the left of the whiteboard and afterwards click in the whiteboard. Now you can type the formula.

To add specific formulas or Greek symbols, you can click on the arrow next to the sum symbol. A box with several options will open: mathematical symbols en Greek lower- uppercases. 

Some basic formulas

Next to the mathematical symbols in the list you can use some extra useful formulas. For example superscript for exponentiation.
Below you can find some useful formulas: 

Superscript

Subscript

Fractions

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