fx-82MS fx-85MS fx-220 PLUS fx-300MS fx-350MS

1 S Guide(2nd edition / )CASIO Worldwide Education are available in multi languages at fx-220 PLUSfx-85 MSfx-82 MSfx-300 MSfx-350 MSTable of ContentsBefore Using the this the the Hard Power On and 5 Adjusting Display 5 Reading the Modes and Calculator the Calculator the calculation Mode and Other Expression and Corrections During 13 Number of Decimal Places and Number of Significant a Final Closed 15 Decimal Fraction 15 Mixed Fraction Improper Fraction 16 Percent , Minute, Second (Sexagesimal) Sexagesimal Values between Sexagesimal and ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only).. 19 Using Engineering History and Memory Memory (Ans)..21 Variables (A, B, C, D, E, F, M, X, Y) ( fx-82MS / fx-85MS / fx-300MS /fx-350 MSonly)..22 Independent Memory (M).

2 22 Clearing the Contents of All ( ), Natural Logarithm Base ( )..25 Natural Logarithm Base e ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only)..25 Trigonometric Functions, Inverse Trigonometric 25 Trigonometric Trigonometric Functions, Inverse Hyperbolic Unit Functions, Logarithmic 27 Exponential Functions and Power Root Coordinate (!)..30 Random Number (Ran#)..30 Random Integer (RanInt#) ( fx-220 PLUS only)..31 Permutation (nPr) and Combination (nCr)..31 Rounding function (Rnd)..32 Using calculation Calculations (SD, REG*)* fx-82MS / fx-85MS / fx-300MS / fx-350MS Deviation (SD)..33 Regression Calculations (REG) ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only)..36 Technical Assuming Malfunction of the the Priority Ranges, Number of Digits, and Range and calculation Input Ranges and Using the CalculatorAbout this Manual In no event shall CASIO Computer Co.

3 , Ltd. be liable to anyone forspecial, collateral, incidental, or consequential damages in connectionwith or arising out of the purchase or use of this product and items thatcome with it. Moreover, CASIO Computer Co., Ltd. shall not be liable for any claim ofany kind whatsoever by any other party arising out of the use of thisproduct and the items that come with it. Unless specifically stated, all sample operations in this manual assumethat the calculator is in its initial default setup. Use the procedure under"Initializing the Calculator" to return the calculator to its initial defaultsetup. The contents of this manual are subject to change without notice. The displays and illustrations (such as key markings) shown in thismanual are for illustrative purposes only, and may differ somewhat fromthe actual items they represent.

4 Company and product names used in this manual may be registeredtrademarks or trademarks of their respective the CalculatorPerform the following procedure when you want to initialize the calculatorand return the calculation mode and setup to their initial default that this operation also clears all data currently in calculator : (CLR)(All) fx-220 PLUS: (All)PrecautionsBe sure to read the following safety precautions before using PrecautionsBattery Keep batteries out of the reach of small Use only the type of battery specified for this calculator in Precautions Even if the calculator is operating normally, replace the batteryaccording to the schedule shown below. Continued use after thespecified number of years may result in abnormal operation. Replacethe battery immediately after display figures become PLUS: Every two yearsfx-85MS/ fx-300MS / fx-350MS : Every three years A dead battery can leak, causing damage to and malfunction of thecalculator.

5 Never leave a dead battery in the calculator. The battery that comes with the calculator is for factory testing,and it discharges slightly during shipment and storage. Because ofthese reasons, its battery life may be shorter than normal. Do not use a nickel-based primary battery with this between such batteries and product specifications canresult in shorter battery life and product malfunction. Avoid use and storage of the calculator in areas subjected totemperature extremes, and large amounts of humidity and dust. Do not subject the calculator to excessive impact, pressure, or bending. Never try to take the calculator apart. Use a soft, dry cloth to clean the exterior of the calculator. Whenever discarding the calculator or batteries, be sure to do so inaccordance with the laws and regulations in your particular StartedRemoving the Hard CaseBefore using the calculator, slide its hard case downwards to remove it,and then affix the hard case to the back of the calculator as shown in theillustration Power On and Off Press to turn on the calculator.

6 Press (OFF) to turn off the The calculator also will turn off automatically after approximately 10 minutes of non-use. Press the key to turn the calculator back Display Contrast1. Press . This displays the display setup Press .3. Use and to adjust display After the setting is the way you want, press .Important! If adjusting display contrast does not improve display readability, it probably meansthat battery power is low. Replace the Markingsfx-82MS/ fx-85MS / fx-300MS /fx-350M S: Pressing the or keyfollowed by a second key performs the alternate function of the PLUS: Pressing the key followed by a second key performsthe alternate function of the second alternate function is indicated by the text printed above the :(1) Keycap function (2) Alternate functionfx-220 PLUS: The following shows what the different colors of the alternate functionkey text key marking text isthis color:It means this:YellowPress and then the key to access theapplicable and then the key to input theapplicable variable, constant, function, orsymbol.

7 ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only)Blue (or enclosed inblue brackets)Enter the SD Mode and REG Mode to accessthe function. ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only) The following shows an example of how an alternate function operationis represented in this : (sin-1)* 1* Indicates the function that is accessed by the key operation () before it. Note that this is not part of the actual key operationyou perform. The following shows an example of how a key operation to select an on-screen menu item is represented in this : (COMP)*6* Indicates the menu item that is selected by the number keyoperation () before it. Note that this is not part of the actual keyoperation you perform. The cursor key is marked with four arrows, indicating direction, asshown in the illustration nearby. In this manual, cursor key operation isindicated as , , , and.

8 Reading the DisplayThe two-line display makes it possible to view both the calculation formulaand its result at the same time .(1) calculation formula(2) calculation result(3) Indicators The table below describes some of the typical indicators that appear atthe top of the screen (3).This indicator:Means this:The keypad has been shifted by pressing the key. The keypad will unshift and this indicator willdisappear when you press a alpha input mode has been entered bypressing the key. The alpha input mode willbe exited and this indicator will disappear whenyou press a key. ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only)//Indicates the current setting of Angle Unit (:Degree, : Radian, or : Gradian) on the fixed number of decimal places is in indicator:Means this:SCIA fixed number of significant digits is in is a value stored in independent calculator is standing by for input of a variablename to assign a value to the variable.

9 Thisindicator appears after you press (STO).( fx-82MS / fx-85MS / fx-300MS / fx-350MS only)RCLThe calculator is standing by for input of a variablename to recall the variable's value. This indicatorappears after you press . ( fx-82MS / fx-85MS / fx-300MS / fx-350MS only)8 calculation Modes andCalculator SetupCalculation ModeBefore starting a calculation , you must first enter the correct mode asindicated in the table you want to perform this typeof operation:Perform this key operation:General calculations(COMP)Standard deviation(SD)Regression calculations(REG) fx-220 PLUSWhen you want to perform this typeof operation:Perform this key operation:General calculations(COMP)Standard deviation(SD)Note The initial default calculation mode is the COMP Mode. Mode indicators appear in the upper part of the display.

10 The COMP, SD, and REG Modes can be used in combination with the angle unitsettings. Be sure to check the current calculation mode (SD, REG, COMP) and angle unitsetting (Deg, Rad, Gra) before beginning a the Calculator SetupPressing the key more than once displays additional setup ( ___ ) settings are initial Rad GraSpecifies degrees, radians or grads as the angle unit for value input andcalculation result display.(90 = /2 radians = 100 grads)Fix Sci NormSpecifies the number of digits for display of a calculation : The value you specify (from 0 to 9) controls the number of decimalplaces for displayed calculation results. calculation results are rounded offto the specified digit before being : 100 7 = (Fix 3) (Fix 2)Sci: The value you specify (from 1 to 10) controls the number of significantdigits for displayed calculation results.