Instruction/ maintenance manual of the product FX-115MSPLUS Casio
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fx-95MS fx-100MS fx-115MS ( fx-912MS) fx-570MS fx-991MS User's Guide k fx-912MS owners Please be sure to read the impor tant notice of this manual.
CASIO ELECTRONICS CO., LTD. Unit 6, 1000 North Circular Road, London NW2 7JD, U.K..
1 Removing and Replacing the Calculator’ s Cover • Before starting ..... 1 Holding the cov er as shown in the illustr ation, slide the unit out of the cov er . •A fter y ou are finished ..... 2 Holding the cov er as shown in the illustr ation, slide the unit out of the cov er .
2 Caution This symbol is used to indicate inf or mation that can result in personal injury or material damage if ignored. Batteries •A fter removing the battery from the calculator , put it in a safe place where it will not get into the hands of small children and accidentally sw allow ed.
3 only , and ma y diff er somewhat from the actual items the y represent. • The contents of this manual are subject to change with- out notice. •I n no e vent shall CASIO Computer Co .
4 •A vo id use and storage in areas subjected to large amounts of humidity and dust. Ta ke care ne ver to lea ve the calculator where it might be splashed by w ater or exposed to large amounts of hu- midity or dust. Such conditions can damage inter nal cir- cuitr y .
5 Contents Removing and Replacing the Calculator’ s Cover ................................... 1 Safety Precautions .................................. 2 Handling Precautions ............................. 3 Tw o-line Display ..........................
6 k Common and Natural Logarithms/ Antilogarithms ...................................................... 19 k Square Roots, Cube Roots , Roots, Squares, Cubes , Reciprocals, F actor ials, Random Numbers, π , and Pe rm utation/Combination ............
7 T wo-line Display The two-line displa y makes it possible to view both the calculation form ula and its result at the same time. • The upper line shows the calculation f ormula. • The lower line sho ws the result. A separator symbol is displa yed e v er y three digits when the integer par t of the mantissa has more than three dig- its.
8 •P r e ssing the F ke y more than twice displa ys additional setup screens. Setup screens are described in the sec- tions of this manual where the y are actually used to change the calculator setup .
9 k Making Corrections During Input •U s e e and r t o mo v e t he cursor to the location y ou w ant. •P r e ss [ to delete the number or function at the current cursor position. •P r e ss A K to change to an insert cursor t . Inputting something while the inser t cursor is on the displa y in- ser ts the input at the insert cursor position.
10 k Multi-statements A multi-statement is an e xpression that is made up of two or more smaller e xpressions, which are joined using a colon ( : ). • Example: To add 2 + 3 and then multiply the result b y 4 2 + 3 p g - 4 = = k Exponential Display Formats This calculator can display up to 10 digits .
11 k Decimal P oint and Separator Symbols Y ou can use the displa y setup (Disp) screen to specify the symbols you w ant for the decimal point and 3-digit sepa- rator. •T o change the decimal point and separ ator symbol set- COMP Basic Calculations ting, press the F ke y a number of times until y ou reach the setup screen shown belo w .
12 • It is not necessary to enclose a negative exponent within parentheses. sin 2.34 10 –5 → S 2.34 e D 5 • Example 1: 3 (5 10 –9 ) 1.5 10 –8 3 - 5 e D 9 = • Example 2: 5 (9 7) 80 5 - R 9 + 7 T = •Y ou can skip all T operations before = .
13 1 2. 00 1 2 • Example 2: ↔ 0.5 (F raction ↔ Decimal) 1 C 2 = C C 0.5 00 1 2. 00 2 3 4. 00 11 4. 00 • Example 1: 2.75 2 (Decimal → Fr a ction) 2.75 = 2.75 C A B 3 4 11 4 u Mixed Fraction ↔ Impr oper Fraction Con version • Example: 1 ↔ 1 C 2 C 3 = A B A B 5 3.
14 • An error occurs if you try to input a mixed fr action while the d/c display f ormat is selected. k Pe r centage Calculations • Example 1 : To calculate 12% of 1500 (180) 1500 - 12 A v • Exa.
15 k Degrees, Minutes, Seconds Calculations •Y ou can perform se xagesimal calculations using degrees (hours), minutes, and seconds , and conv er t between sexagesimal and decimal v alues . • Example 1: To con vert the decimal value 2.258 to a sexagesimal v alue and then bac k to a decimal value 2.
16 200 7 = - 14 = (Internal calculation continues using 12 digits.) 28.571 00 400.000 00 28.571 00 28.571 00 399.994 00 200 7 = (Internal rounding) A Q - 14 = The f ollowing perf orms the same calculation using the specified number of decimal places .
17 •Y ou can recall Answ er Memor y contents by pressing g . •A ns wer Memory can store up to 12 digits for the mantissa and two digits f or the e xponent. • Ans wer Memory contents are not updated if the opera- tion perf ormed by any of the abov e ke y operations re- sults in an error .
18 COMP par ticular variab le: 0 A j 1 . This operation de- letes the data assigned to v ariable A. •P erform the f ollowing ke y operation when y ou want to clear the values assigned to all of the v ariables . A B 1 (Mcl) = • Example: 193.2 23 8.
19 • Example 1: sin 63 ° 52 41 0.897859012 q ..... 1 ( Deg) S 63 I 52 I 41 I = • Example 2: cos ( rad ) 0.5 q ..... 2 ( Rad) W R A x 3 T = π 3 • Example 3 : cos 1 q ..... 2 ( Rad) A V R L 2 2 T = g A x = 0.25 π ( r ad) ( ( r ad) ) π 4 2 2 • Example 4: tan 1 0.
20 k Square Roots, Cube Roots, Roots, Squares, Cubes, Recipr ocals, F actorials, Random Numbers, π , and P ermutation/Combination 1 1 3 4 1 • Example 6: 12 R 3 a , 4 a T a = • Example 7: 8! 40320 8 A f = • Example 4: 123 30 2 1023 123 + 30 K = • Example 5: 12 3 1728 12 N * = * A N in the case of fx-570MS/fx-991MS .
21 * A n in the case of fx-100MS/fx-115MS/fx-570MS/ fx-991MS. k Angle Unit Con ver sion •P r e ss A v to displa y the f ollowing menu. 1 2 3 D R G •P r e ssing 1 , 2 , or 3 conv erts the displayed v alue to the corresponding angle unit. • Example: To c o n v e r t 4.
22 k Engineering Notation Calculations 2 3 De g r ee ? EQN • Example 1: To conv er t 56,088 meters to kilometers → 56.088 10 3 56088 = J (km) • Example 2: To conv er t 0.
23 0. x1 = Solution Va r iable name Arrow indicates direction you should scroll to vie w other solutions. Press the ] key to view other solutions. Use [ and ] to scroll between all of the solutions f or the equation. Pressing the t ke y at this point returns to the coefficient input screen.
24 0.25 x1 = 0.75 x1 = i R ⇔ I R ⇔ I D D A r • Example 2: To solv e the equation 8 x 2 – 4 x + 5 = 0 ( x = 0.25 ± 0.75 i ) (Degree?) 2 ( a ?) 8 = ( b ?) D 4 = ( c ?) 5 = ( x 1 = 0.
25 •A ny time until you input a value f or the final coefficient ( c 2 for two unknowns, d 3 fo r three unknowns), you can use the [ and ] ke ys to mov e between coefficients on the screen and make changes , if you want. • Note that you cannot input comple x numbers f or coeffi- cients.
26 SD SD REG Statistical Calculations Standard De viation Use the F ke y to enter the SD Mode when y ou want to perf or m statistical calculations using standard de- viation. SD .................................... F 2 (fx-95MS) F F 1 (Other Models) •A lwa ys star t data input with A B 1 (Scl) = to clear statistical memory .
27 P opulation Standard De viation ( σ n ) = 1.316956719 A X 2 = Arithmetic Mean ( o ) = 53.375 A X 1 = Number of Data ( n ) = 8 A U 3 = Sum of V alues ( Σ x ) = 427 A U 2 = Sum of Squares of V alues ( Σ x 2 ) = 22805 A U 1 = Data Input Precautions • S S inputs the same data twice .
28 Press 2 to e xit data input without registering the value y ou just input. Press 1 if you want to register the v alue y ou just input, without sa ving it in memor y . If y ou do this, ho we ver , you will not be able to displa y or edit an y of the data you ha ve input.
29 •A lwa ys star t data input with A B 1 (Scl) = to clear statistical memory . •I nput data using the ke y sequence shown belo w . < x -data> P < y -data> S • The values produced b y a regression calculation depend on the values input, and results can be recalled using the ke y operations shown in the tab le below .
30 • The values in the abo ve tab les can be used inside of ex pressions the same way y ou use v ariables. u Linear Regression • The regression f ormula for linear regression is: y = A + B x .
31 Te mperature at 1000 hP a = 4.642857143 1000 A X r r r 1 = Coefficient of Determination = 0.965517241 A X r r 3 K = Sample Cov ariance = 35 E A U r 3 , A U 3 - A X 1 - A X r 1 F E A U 3 , 1 F = u .
32 Regression Coefficient A = –35.59856934 A X r r 1 = Regression Coefficient B = 1.495939413 A X r r 2 = Regression Coefficient C = – 6.71629667 10 –3 A X r r 3 = n when x i is 16 = –13.38291067 16 A X r r r 3 = m 1 when y i is 20 = 47.14556728 20 A X r r r 1 = m 2 when y i is 20 = 175.
33 the display . Press t to clear the error , or press e or r to displa y the calculation and correct the problem. See “Error Locator” f or details.
34 • Action •P r e ss e or r to displa y the location of the cause of the error and make required corrections . k Order of Operations Calculations are perf or med in the follo wing order of prec- edence.
35 * fx-100MS/fx-115MS/fx-570MS/fx-991MS only . ** fx-570MS/fx-991MS only . • Operations of the same precedence are perf ormed from ri ght to left. e x In 120 → e x {In( 120)} •O ther operations are perf ormed from left to r ight. • Operations enclosed in parentheses are perf ormed first.
36 •C alculations are perf or med in sequence according to “Order of Operations . ” Commands and values are de- leted from the stack as the calculation is perf ormed. k Input Ranges Internal digits: 12 Accuracy * : As a rule , accuracy is ± 1 at the 10th digit.
37 Functions Input Range x 0 x 1 10 100 x 2 x 1 10 50 1/ x x 1 10 100 ; x G 0 3 x x 1 10 100 x !0 x 69 ( x is an integer) n P r 0 n.
38 *F o r a single calculation, calculation error is ± 1 at the 10th digit. (In the case of e xponential displa y , calculation error is ± 1 at the last significant digit.) Errors are cumulativ e in the case of consecutive calculations , which can also cause them to become large.
39 u A uto P ower Off Calculator pow er automatically tur ns off if you do not per- fo rm any oper ation for about six minutes . When this hap- pens, press 5 to turn power bac k on. Specifications (fx-95MS only) Users of other models should ref er to the “User’ s Guide 2 (Additional Functions).
SA0206-E Printed in China CA 310067-1 CASIO COMPUTER CO. , L TD . 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan SA0206-D Pr inted in China CA 310063-1.
An important point after buying a device Casio FX-115MSPLUS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Casio FX-115MSPLUS yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Casio FX-115MSPLUS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Casio FX-115MSPLUS you will learn all the available features of the product, as well as information on its operation. The information that you get Casio FX-115MSPLUS will certainly help you make a decision on the purchase.
If you already are a holder of Casio FX-115MSPLUS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Casio FX-115MSPLUS.
However, one of the most important roles played by the user manual is to help in solving problems with Casio FX-115MSPLUS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Casio FX-115MSPLUS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
