HP Prime Graphing NW280AAABA manual Type Returns the type of an expression e.g. list, string

trunc Given a value or list of values, as well as an integer n, returns the value or list truncated to n decimal places. If n is not provided, it is taken as 0. Accepts complex numbers.

trunc(Real, Integer) or trunc(List, Integer)

Example:

trunc(4.3) gives 4

tsimplify Returns an expression with transcendentals rewritten as complex exponentials.

tsimplify(Expr)

Example:

tsimplify(exp(2*x)+exp(x)) gives exp(x)^2+exp(x)

type Returns the type of an expression (e.g. list, string).

type(Expr)

Example:

type("abc") gives DOM_STRING

unapply Returns the function defined by an expression and a variable.

unapply(Expr,Var)

Example:

unapply(2*x^2,x) gives (x)→2*x^2

valuation Returns the valuation (degree of the term of lowest degree) of a polynomial. With only a polynomial as argument, the valuation returned is for x. With a variable as second argument, the valuation is performed for it.

valuation(Poly,[Var])

Example:

valuation(x^4+x^3) gives 3

variance Returns the variance of a list or the list of variances of the columns of a matrix. The optional second list is a list of weights.

variance(List1, [List2]) or variance(Matrix)

Example:

variance({3, 4, 2}) returns 2/3

Functions and commands 419