Symbols

Here you'll find the standard mathematical symbols.

Constants

You must use the buttons for e and i. Keyboard e and i are just variables; they aren't the standard constants.

The four basic operations

You can use multiple symbols for multiplication: * asterisk, · middle dot, the one in the menu, and also space. That's it; a space between variables or numbers is an implicit multiplication. The * asterisk is automatically converted to a nicer middle dot ·. About division, apart from the symbol in the menu, you can also use / slash and, of course, the fraction symbol.

Brackets

Do not use curly or square brackets as parentheses. Use only proper parentheses.

Bidimensional symbols

Inequality symbols

Other symbols

Decimal separator

The dot (.) is for the decimal point, the comma (,) is for lists, and the apostrophe ('' ' '') is for derivation. The decimal point is the dot, but the others don't have that function. There is no digit grouping symbol, nor are there spaces. Spaces mean implicit multiplication. The head decimal point is not allowed; use the leading zero in those cases. The trailing decimal point is allowed.

You can convert an exact expression to an approximation by making a simple operation with a decimal number, like multiplying by 1.0.

Plus Minus

Sometimes we are interested in the result of an expression when we add and subtract the same amount, as when we want to compute the roots of a degree two polynomial. The symbol allows us such and more things.

Every possible sign will be computed when we use the symbol. Therefore, if we write symbols, we will get a list of elements. Some of them may be repeated since it is a list, not a set (for instance, ).

We can use the symbol in all the basic operations (plus, minus, product, division, root, power) and some elementary functions (exponential, logarithm, trigonometric and hyperbolic functions and their inverses).

Examples