Casio ClassWiz fx-991EX Manuale utente

QUICK START GUIDE

fx-991EX

http://edu.casio.com/

The fx-991EX “ClassWiz” features a high-resolution

display, making it easier to view formulas and symbols.

This remarkable screen can display between 2-6 times

as many characters as other scientic calculators, yet

still runs on solar power.

Use the Wkey to turn the calculator on, and press

qC(OFF) to power the unit down.

The icon-based menu, accessible via the pkey,

allows easy navigation of features using the arrow keys

and the number keys or the Qshortcuts.

The okey can be used like Backspace in a word

processor to delete the character(s) left of the cursor.

The symbols printed on the keys use Natural Textbook

Display™ notation, similar to that found in textbooks.

This makes input of expressions fast and easy.

The nkey toggles your calculation results between

Standard (exact) and Decimal forms.

fx-991EX Quick Start Guide2

Icon Menu Name Description

CALCULATE Perform general computations using Natural Textbook Display™ notation, including

absolute value, logs of any base, summation, derivatives, and integrals.

COMPLEX Perform computations with complex numbers, including a + bi form, polar ( )

form, and conversions between the two.

BASE-N Perform binary, octal, and hexadecimal computations, and convert among those number

bases and base-10.

MATRIX Perform operations on matrices up to 4x4, including matrix arithmetic,

determinants, transpositions, and identity matrices.

VECTOR Perform operations on 2- and 3-dimensional vectors, including vector

arithmetic, dot products, angles, and unit vectors.

STATISTICS Calculate 13 different one-variable statistics, and apply linear, quadratic,

logarithmic, exponential, and geometric (power) regressions.

DISTRIBUTION Investigate Normal, Inverse Normal, Binomial, and Poisson probability and

cumulative distributions.

SPREADSHEET Create spreadsheets with up to 5 columns and 45 rows. Spreadsheet

supports Fill, Cut/Copy/Paste, recursive formulas, Mean, and Sum commands.

TABLE Create tables of values to compare up to 2 functions simultaneously.

EQUATION/

FUNCTION

Solve simultaneous (systems of) equations with up to 4 unknowns, and

polynomials of up to degree 4.

INEQUALITY Solve polynomial inequalities of up to degree 4, with the solution set expressed as

a compound inequality.

RATIO Solve proportions of the form A : B = X : D and A : B = C : X.

The following explains the meaning of each icon on the fx-991EX icon menu

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