HP NW280AAABA Manual do Utilizador descarregar pdf (Página 388)

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101

382 Functions and commands

algvar Returns the matrix of the symbolic variable names used in an

expression. The list is ordered by the algebraic extensions

required to build the original expression.

algvar(Expr)

Example:

algvar(sqrt(x)+y) gives

AND Logical And. Returns 1 if the left and right sides both evaluate

to true and returns 0 otherwise.

Expr1 AND Expr2

Example:

3 +1==4 AND 4 < 5 returns 1

append Appends an element to a list or vector.

append((List, Element)

append(Vector, Element)

Example:

append([1,2,3],4) gives [1,2,3,4]

apply Returns a vector containing the results of applying a function

to the elements in a list.

apply(Var→f(Var), List)

Example:

apply(x→x^3,[1,2,3]) gives [1,8,27]

assume Used in programming to state an assumption about a

variable.

assume(Var,Expr)

Example:

assume(n, integer)

1 2 ... 383 384 385 386 387 388 389 390 391 392 393 ... 615 616

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