Casio fx-115ES User Manual

http://world.casio.com/edu/RCA502136-001V01Efx-82ESfx-83ESfx-85ESfx-300ESfx-350ESUser's GuideA

E-8•Math format causes fractions, irrational numbers, and otherexpressions to be displayed as they are written on paper.•Linear format causes fraction

E-9Specifying the Fraction Display FormatTo specify this fractionPerform this key operation:display format:Mixed 1Nc1(ab/c)Improper 1Nc2(d/c)Specifyin

E-10Inputting Expressions andValuesk Inputting a Calculation Expression UsingStandard FormatYour calculator lets you input calculation expressions jus

E-11Displaying a Long ExpressionThe display can show up to 14 characters at a time. Inputting the15th character causes the expression to shift to the

E-12•With Math format, you can only use the insert mode. Pressing1Y(INS) when the Math format is selected does not switch tothe overwrite mode. See “I

E-13dddYsOverwrite Mode:c60)ddddsInserting Input into a CalculationAlways use the insert mode for this operation. Use d or e tomove the cursor to the

E-14k Inputting with Math FormatWhen inputting with Math format, you can input and display fractionsand some functions using the same format as they a

E-15e+1MathExample 2: To input 1 + '2 + 3MATH1+!2Mathe+3MathExample 3: To input (1 + )2 × 2 =MATH(1+'2c5e)Mathw*2=•When you press =

E-16The following examples show the other functions that can be usedin the above procedure, and the required key operations to use them.Original Expre

E-17Example 2: sin (60) = (Angle Unit: Deg)MATHs60=MathExample 3: sin–1 (0.5) = π (Angle Unit: Rad)MATH1s(sin–1)0.5=Math• The following are the c

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E-18Example:The underlined areas in the above examples indicate what causeddecimal form to be used.Reasons why the results of the examples are display

E-19Basic Calculations (COMP)This section explains how to perform arithmetic, fraction, percent,and sexagesimal calculations.All calculations in this

E-20Example: (2 + 3) × (4 – 1) = 15LINE(2+3)*(4-1=k Fraction CalculationsHow you should input fractions depends on the input/output formatthat is curr

E-21Switching between Fraction and Decimal Format• The format of the fraction depends on the currently selected fractiondisplay format setting (improp

E-22Sexagesimal Calculations•Performing the following types of sexagesimal calculationsproduces a sexagesimal result.-Addition or subtraction of two s

E-23Using Calculation HistoryMemory and Replay (COMP)Calculation history memory maintains a record of each calculationexpression you input and execute

E-24Using Calculator MemoryMemory Name DescriptionAnswer Memory Stores the last calculation result obtained.IndependentCalculation results can be adde

E-25Inputting Answer Memory Contents into an ExpressionExample: To perform the calculations shown below:LINE123+456=789-G=k Independent Memory (M)You

E-26Calculation Examples Using Independent Memory• If the “M” indicator is on the display, perform the procedure under“Clearing Independent Memory” be

E-27Function CalculationsThis section explains how to use the calculator’s built-in functions.The functions available to you depends on the calculatio

E-1About this Manual• The MATH mark indicates an example that uses Math format,while the LINE mark indicates Linear format. For details aboutinput

E-28k Converting an Input Value to theCalculator’s Default Angle UnitAfter inputting a value, press 1G(DRG') to display the angleunit specificati

E-29k Power Functions and Power RootFunctionsX2, X3, X–1, X^, '''''(, 3'''''(, ^'''&a

E-30k Other FunctionsThis section explains how to use the functions shown below.!, Abs(, Ran#, nPr, nCr, Rnd(Factorial (!)This function obtains the fa

E-31Display Digits Setting: Fix or SciThe value is rounded to the specified number of digits.Example: 200 ÷ 7 × 14 = 400LINE200/7*14=(Specifies three

E-32Tran sforming DisplayedValuesYou can use the procedures in this section to transform a displayedvalue to engineering notation, or to transform bet

E-33Examples of S-D TransformationNote that S-D transformation can take some time to perform.Example: Fraction → DecimalMATH'5c6=Math•Each press

E-34k Inputting Sample DataDisplaying the STAT Editor ScreenThe STAT editor screen appears after you enter the STAT Modefrom another mode. Use the STA

E-35Example: To input the value 123.45 in cell X1(Move the cursor to cell X1.)123.45STAT=STATRegistering a value causes the cursor to move down one ce

E-36Inserting a Line(1) On the STAT editor screen, move the cursor to the line that willbe under the line you will insert.(2) Press 11(STAT)3(Edit).(3

E-37STAT Menu ItemsCommon ItemsSelect thisWhen you want to do this:menu item:1TypeDisplay the statistical calculation type selectionscreen2Data Displa

E-2The cursor key is marked with four arrows,indicating direction, as shown in theillustration nearby. In this User’s Guide, cursorkey operation is in

E-38Var Sub-menu (11(STAT)5(Var))Select thisWhen you want to obtain this:menu item:1n Number of samples2o Mean of the sample data3xσn Population stand

E-39Sum Sub-menu (11(STAT)4(Sum))Select thisWhen you want to obtain this:menu item:1Σx2Sum of squares of the X-data2Σx Sum of the X-data3Σy2Sum of squ

E-40Appendix Linear Regression Calculation: <#047> to <#050>•Examples <#048> through <#050> all use the data input in Example&

E-41Statistical CalculationModel EquationCalculationType FormulaLogarithmic Regressiony = A + Bln X<#055>(ln X)e Exponential Regressiony = AeBX&

E-42(1) Press N3(TABLE).(2) Input the function.(3) After making sure the function is the way you want, press =.• This displays the start value input s

E-43•Only variable X can be used as the variable of a function.• The coordinate conversion (Pol, Rec) functions cannot be usedfor a number table gener

E-44Technical Informationk Calculation Priority SequenceThe calculator performs calculations according to a calculation priority sequence.• Basically,

E-45k Stack LimitationsThis calculator uses memory areas called stacks to temporarily store lowercalculation priority sequence values, commands, and

E-46Functions Input Rangetanx DEG Same as sinx, except when x= (2n–1)90.RAD Same as sinx, except when x= (2n–1)π/2.GRA Same as sinx, except wh

E-47•Precision is basically the same as that described under “Calculation Range andPrecision”, above.•^(xy), x'y, 3', x!, nPr, nCr type fu

E-3Safety PrecautionsBe sure to read the following safety precautions before using thiscalculator. Keep this manual handy for later reference.CautionT

E-48Insufficient MEM Error• Cause• There is not enough memory to perform your calculation.• Action•Narrow the table calculation range by changing the

E-49Important!•Removing the button battery from the calculator causesindependent memory contents and values assigned to variablesto be cleared.1 Press

E-501 Press 1A (OFF) to turn off thecalculator.2 On the back of the calculator, removethe screws and the back cover.3 Remove the old battery.4 Load a

E-51Specificationsfx-82ES/fx-83ESPower Requirements:AAA-size battery: R03 (UM-4) × 1Battery Life: Approximately 6,000 hours (continuous operation)Appr

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E-4Handling Precautions•Be sure to press the O key before using the calculator forthe first time.•Even if the calculator is operating normally, replac

E-5Before Using the Calculatork Removing the Hard CaseBefore using the calculator, slide its hard case downwards to removeit, and then affix the hard

E-6k About the DisplayYour calculator has a 31-dot × 96-dot LCD screen.Example:k Display IndicatorsSample Display:ThisMeans this:indicator:The keypad

E-7Important!•For a very complex calculation or some other type of calculationthat takes a long time to execute, the display may show only theabove in