HP Prime Graphing Wireless Calculator - Manual (Page 197)

Functions and commands 193
Example:
logistic_regression([0.0,1.0,2.0,3.0,4.0],0.0
,1.0)
gives
[-17.77/(1+exp(-
0.496893925384*x+2.82232341488+3.14159265359*
i)),-2.48542227469/(1+cosh(-
0.496893925384*x+2.82232341488+3.14159265359*
i))]
lvar Given an expression, returns a list of the functions of the
expression which utilize variables, including occurrences of
the variables themselves.
lvar(Expr)
Example:
lvar(e^(x)*2*sin(y) + ln(x)) returns [e^(x)
sin(y) ln(x)]
map There are two uses for this function, in which the second
argument is always a mapping of a variable onto an
expression. If the expression is a function of the variable, the
function is applied to each element in the vector or matrix (the
first argument) and the resulting vector or matrix is returned; if
the expression is a Boolean test, each element in the vector or
matrix is tested and the results are returned as a vector or
matrix. Each test returns either 0 (fail) or 1 (pass).
map(Matrix, Var → Function) or map(Matrix, Var → Test)
Examples:
map([1 2 3], x→x 3 ) returns [1 8 27]
map([1 2 3], x→ x>1) returns [0 1 1]
mat2list Returns a vector containing the elements of a matrix.
mat2list(Matrix)
Example:
mat2list([[1 8],[4 9]])
gives
[1 8 4 9]
matpow Given a matrix and an integer n, returns the nth power of the
matrix by jordanization.
matpow(Matrix, Integer)