Hp Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 200)

196 Functions and commands

Example:

mult_conjugate returns

nDeriv Given an expression, a variable of differentiation, and a real

number h, returns an approximate value of the derivative of

the expression, using f’(x)=(f(x+h)–f(x+h))/(2*h).

Without a third argument, the value of h is set to 0.001; with

a real as third argument, it is the value of h. With a variable

as the third argument, returns the expression above with that

variable in place of h.

nDeriv(Expr,Var, Real) or

nDeriv(Expr, Var1, Var2)

Example:

nDeriv(f(x),x,h) returns (f(x+h)-(f(x-h)))*0.5/h

NEG Unary minus. Enters the negative sign.

normal Returns the expanded irreducible form of an expression.

normal(Expr)

Example:

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

normalize Given a vector, returns it divided by its l

norm (where the l

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

32–()

32–()32+()⋅

32+

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Hp Prime Graphing Wireless Calculator Manual do Utilizador Página 200