Here is a list of valid expressions followed by some important comments.
| Expression | Meaning |
|---|---|
| + | plus |
| - | minus |
| * | multiply |
| / | divide |
| ^ | exponentiation |
| pi | The number p |
| e | The number e |
| ( | 0pen parentheses |
| ) | close parentheses |
| abs(t) | absolute value of t, |t| |
| acos(t) | arccos(t) of t, inverse cosine of t |
| asin(t) | arcsin(t) of t, inverse sine of t |
| atan(t) | arctan(t) of t, inverse tangent of t |
| ceil(t) | ceiling of t, the smallest integer > t |
| cos(t) | cosine of t, with t in radians |
| cosh(t) | hyperbolic cosine of t |
| exp(t) | exponential of t, e^t or et |
| floor(t) | floor of t, largest integer < t |
| log(t) | natural logarithm of t, ln(t) |
| log10(t) | log of t to base 10 |
| sin(t) | sine of t, with t in radians |
| sinh(t) | hyperbolic sine of t |
| sqrt(t) | square root of t |
| tan(t) | tangent of t, with t in radians |
| tanh(t) | hyperbolic tangent of t |