HP Prime Graphing Wireless Calculator Manuel d'utilisateur télécharger pdf (Page 478)

100

101

Example:

exponential(2.1,0.5) returns 0.734869273133

exponential_cdf

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

probability density function for the value x, given parameter k. With the optional parameter x

, returns the

area under the exponential probability density function between x and x

exponential_cdf(k, x, [x

])

Examples:

exponential_cdf(4.2, 0.5) returns 0.877543571747

exponential_cdf(4.2, 0.5, 3) returns 0.122453056238

exponential_icdf

The inverse exponential cumulative probability density function. Returns the value x such that the

exponential lower-tail probability of x, given parameter k, is p.

exponential_icdf(k, p)

Example:

exponential_icdf(4.2,0.95) returns 0.713269588941

exponential_regression

Given a set of points, returns a vector containing the coeicients a and b of y=b*a^x, the exponential which

best ts the set of points. The points may be the elements in two lists or the rows of a matrix.

exponential_regression(Matrix) or exponential_regression(List1, List2)

Example:

exponential_regression returns 1.60092225473,1.10008339351

EXPR

Parses a string into a number or expression and returns the result evaluated.

EXPR(String)

Examples:

expr("2+3") returns 5

expr("X+10") returns 100, if the variable X has the value 90

ezgcd

Uses the EZ GCD algorithm to return the greatest common divisor of two polynomials with at least two

variables.

ezgcd(Poly1,Poly2)

430 Chapter 22 Functions and commands

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HP Prime Graphing Wireless Calculator Manuel d'utilisateur Page 478

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