HP Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 494)

100

101

normal(Expr)

Example:

normal(2*x*2) gives 4*x

normalize

Given a vector, returns it divided by its l

norm (where the l2 norm is the square root of the sum of the squares

of the vector’s coordinates).

Given a complex number, returns it divided by its modulus.

normalize(Vector) or normalize(Complex)

Example:

normalize(3+4*i) gives (3+4*i)/5

NOT

Returns the logical inverse of a Boolean expression.

not(Expr)

odd

Returns 1 if a given integer is odd, and returns 0 otherwise.

odd(Integer)

Example:

odd(6) gives 0

Logical Or. Returns 1 if either or both sides evaluates to true and 0 otherwise.

Expr1 or Expr2

Example:

3 +1==4 OR 8 < 5 returns 1

order_size

Returns the remainder (O term) of a series expansion: limit(x^a*order_size(x),x=0)=0 if a>0.

order_size(Expr)

pa2b2

Takes a prime integer n congruent to 1 modulo 4 and returns [a,b] such that a^2+b^2=n.

pa2b2(Integer)

Example:

pa2b2(17) gives [4 1]

446 Chapter 22 Functions and commands

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