HP 48gII Graphing Calculator Manual do Utilizador descarregar pdf (Página 784)

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Page B-3

Main key functions

Keys A through F keys are associated with the soft menu options that

appear at the bottom of the calculator’s display. Thus, these keys will activate

a variety of functions that change according to the active menu.

 The arrow keys, —˜š™, are used to move one character at a

time in the direction of the key pressed (i.e., up, down, left, or right).

 The APPS function activates the applications menu.

 The MODE function activates the calculator’s modes menu.

 The TOOL function activates a menu of tools useful for handling variables

and getting help on the calculator.

 The VAR function shows the variables stored in the active directory, the

STO function is used to store contents in variables.

 The NXT function is used to see additional soft menu options or variables

in a directory.

 The HIST function allows you access to the algebraic-mode history, i.e.,

the collection of recent command entries in that mode.

 The EVAL key is used to evaluate algebraic and numeric expressions, the

apostrophe key [ ‘ ] is used to enter a set of apostrophes for algebraic

expressions.

 The SYMB activates the symbolic operations menu.

 The delete key ƒ is used to delete characters in a line.

 The y

key calculates the x power of y.

 The

x key calculates the square root of a number.

 The SIN, COS, and TAN keys calculate the sine, cosine, and tangent,

respectively, of a number.

 The EEX key is used to enter power of tens (e.g., 5×10

, is entered as

5V3, which is shown as 5E3).

 The +/- key changes the sign of an entry, the X key enters the character X

(upper case).

 The 1/x key calculates the inverse of a number, the keys +, −, ×, and ÷,

are used for the fundamental arithmetic operations (addition, subtraction,

multiplication, and division, respectively).

 The ALPHA key is combined with other keys to enter alphabetic characters.

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HP 48gII Graphing Calculator Manual do Utilizador Página 784

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