HP Prime Graphing Wireless Calculator Instrukcja Użytkownika Pobierz pdf (Strona 510)

100

101

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 dened by an expression and a variable.

unapply(Expr,Var)

Example:

unapply(2*x^2,x) gives (x)→2*x^2

uniform

The discrete uniform probability density function. Computes the probability density of the uniform

distribution at x, given parameters a and b.

uniform(a, b, x)

Example:

uniform(1.2, 3.5, 3) returns 0.434782608696

uniform_cdf

The cumulative uniform probability density function. Returns the lower-tail probability of the uniform

probability density function for the value x, given parameters a and b. With the optional parameter x

, returns

the area under the uniform probability density function between x and x

uniform_cdf(a, b, x, [x

])

Examples:

uniform_cdf(1.2, 3.5, 3) returns 0.782608695652

uniform_cdf(1.2, 3.5, 2, 3) returns 0.434782608696

462 Chapter 22 Functions and commands

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