HP Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 486)

100

101

Example:

ker([[1 2], [3 6]] returns [2 1]

laplacian

Returns the Laplacian of an expression with respect to a vector of variables.

laplacian(Expr, Vector)

Example:

laplacian(exp(z)*cos(x*y),[x,y,z]) returns –x^2*cos(x*y)*exp(z)- y^2*cos(x*y)*exp(z)

+cos(x*y)*exp(z)

latex

Returns the evaluated CAS expression written in Latex format.

latex(Expr)

Examples:

latex(1/2) returns "\frac{1}{2}"

latex((x^4-1)/(x^2+3) returns "\frac{(x^{4}-1)}{(x^{2}+3)}"

lcoe

Returns the coeicient of the term of highest degree of a polynomial. The polynomial can be expressed in

symbolic form or as a list.

lcoeff(Poly) or lcoeff(List) or lcoeff(Vector)

Example:

lcoeff(-2*x^3+x^2+7*x) returns -2

legendre_symbol

With a single integer n, returns the Legendre polynomial of degree n. With two integers, returns the Legendre

symbol of the second integer, using the Legendre polynomial whose degree is the rst integer.

legendre_symbol(Integer1, [Integer2])

Example:

legendre(4) gives 35*x^4/8+-15*x^2/4+3/8 while legendre(4,2) returns 443/8 after simplication

length

Returns the length of a list, string or set of objects.

length(List) or length(String) or length(Object1, Object2,…)

Example:

length([1,2,3]) gives 3

438 Chapter 22 Functions and commands

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