Functions

The most common functions are the polynomial and rational ones, both of which are called algebraic functions. They're covered in the Polynomials section. This section is about other groups of so-called transcendental functions. Their exact values can't be calculated with basic arithmetic alone. You can calculate approximations, but it's impractical to do so by hand. It's better to use an electronic calculator, a table, or a book of values, as was done in the old days.

Trigonometric functions

Trigonometric functions started in the basic geometry of triangles, but now they comprise a complex field that's a central subject of calculus. Trigonometric functions have two modes of work: in degrees and in radians. See the Document settings section.

You can use the Simplify action to force non-trivial simplifications over trigonometric expressions. Moreover, the Verify action can test for trigonometric identities.

Logarithms and exponentials

Exponential and logarithmic functions are essential in calculus. The logarithm is used for physical measures, such as the units pH in chemistry and dB in acoustic physics.

You must enter e with the button. You can't simply type e with the keyboard because then it's just a variable called e but not the number. The logarithm base can be set as a subindex of the function log(). If no base is set, just log() means the decimal logarithm or, in other words, the base 10 logarithm. Also, ln() means the natural logarithm, which is the base e logarithm.

You can use the Simplify action to force non-trivial simplifications over logarithmic and exponential expressions. Also, the Verify action can test for identities.

Hyperbolic functions

Examples