How to enter expressions
Type the whole expression exactly as you would write it. Multiplication can be written as *, × or implied (2pi works). Exponentiation is ^ and binds tighter than multiplication; use parentheses whenever in doubt.
Precision notes
Results display up to six decimal places internally but trailing floating-point noise is rounded away. Factorials inside expressions are limited to arguments of 170 or less to stay within double-precision range.