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E
fx-50F PLUS
User's Guide
http://world.casio.com/edu/
RCA502903-001V01
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Getting Started Thank you for purchasing this CASIO product. k Before using the calculator for the fi rst time... Turn over the calculator and slide it from the hard case as shown in the illustration. Next, slide the hard case onto the back of the calculator. A After you are fi nished using the calculator... Remove the hard case from the back of the calculator, and re-install it onto the front. Resetting the Calculator to Initial Defaults k Perform the operation below when you want to re
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• The following shows the notation used in the manual for menu items that appear on the display (which are executed by pressing a number key). Example: b(Contrast) The notation in parentheses indicates the menu item accessed by the preceding number key. • The cursor key is marked with arrows indicating direction as shown in the illustration nearby. Cursor key operations are notated in this manual as: REPLA REPLAY Y f,c,d, ande. • The displays and illustrations (such as key markings) sh
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Operating Precautions • Be sure to press the key before using the calculator for the fi rst time. O • Even if the calculator is operating normally, replace the battery at least once every three years. A dead battery can leak, causing damage to and malfunction of the calculator. Never leave a dead battery in the calculator. • The battery that comes with this unit discharges slightly during shipment and storage. Because of this, it may require replacement sooner than the normal expected
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Contents Getting Started .........................................................................................1 Before using the calculator for the fi rst time... .................................................................... 1 Resetting the Calculator to Initial Defaults.......................................................................... 1 About this Manual ............................................................................................................... 1 Safety P
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↔ Coordinate Conversion (Rectangular Polar) ................................................................ 29 Other Functions ................................................................................................................ 31 3 Using 10 Engineering Notation (ENG) .................................................33 ENG Calculation Examples .............................................................................................. 33 Complex Number Calculations (CMPLX)
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Before starting a calculation... Turning On the Calculator k PressO. The calculator will enter the calculation mode (page 7) that it was in the last time you turned it off. A Adjusting Display Contrast If the fi gures on the display become hard to read, try adjusting display contrast. 1. Press (SETUP) (Contrast). !N db LI LI G GH HT T D DA AR RK K • This will display the contrast adjustment screen. CA CASIO SIO 2. Use and to adjust display contrast. d e 3. After
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Function Colors To perform the function 7 AText: Red Press and then press the key (variable A). a Frame: Green In the BASE Mode, press the key. 8 LOGIC Text: Green In the BASE Mode, press the key. Reading the Display k Input Expressions and Calculation Results A This calculator can display both the expressions you input and calculation results on the same screen. Input expression ( ( ) ) × × + + – – × × - - 2 2 5 5 4 4 2 2 3 3 Calculation result 24 24 A Dis
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2. Perform one of the following operations to select the calculation mode you want. To select this calculation mode: Press this key: COMP (Computation) b(COMP) CMPLX (Complex Number) c(CMPLX) BASE (Base n) d(BASE) SD (Single Variable Statistics) e(SD) REG (Paired Variable Statistics) f(REG) PRGM (Program) (PRGM) g • Pressing a number key from b tog selects the applicable mode, regardless of which menu screen is currently displayed. Calculator Setup k The calculator setup can be used to co
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The following explains how calculation results are displayed in accordance with the setting you specify. • From zero to nine decimal places are displayed in accordance with the number of decimal places (Fix) you specify. Calculation results are rounded off to the specifi ed number of digits. Example: 100 ÷ 7 = 14.286 (Fix = 3) 14.29 (Fix = 2) • After you specify the number of signifi cant digits with Sci, calculation results are displayed using the specifi ed number of signifi cant digits a
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Clearing the Calculation Mode and Setup Settings k Perform the procedure described below to clear the current calculation mode and all setup settings and initialize the calculator to the following. Calculation Mode ................................COMP (Computation Mode) Angle Unit ...........................................Deg (Degrees) Exponential Display .............................Norm1 Fraction Format ..................................ab/c (Mixed Fractions) Complex Number Format ....
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A Omitting the Multiplication Sign You can omit the multiplication sign in the following cases. • Immediately before an open parenthesis: 2 × (5 + 4) • Immediately before a scientifi c function with parentheses: 2 × sin(30), 2 × (3) ' • Before a prefi x symbol (excluding the minus sign): 2 × h123 • Before a variable name, constant, or random number: 20 × A, 2 × π , 2 × i Final Closed Parenthesis A You can omit one or more closed parentheses that come at the end of a calculation, immediate
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Editing a Calculation k A Insert Mode and Overwrite Mode The calculator has two input modes. The insert mode inserts your input at the cursor location, shifting anything to the right of the cursor to make room. The overwrite mode replaces the key operation at the cursor location with your input. Original Expression Pressing + Insert Mode 1+2 34 1+2+ 34 | | Cursor Overwrite Mode 1+2 3 4 1+2 + 4 Cursor A vertical cursor ( |) indicates the insert mode, while a horizontal cursor ( ) indicates
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ddd ×× ×× 369 369 12 12 D × × 369 369 12 12 Editing a Key Operation within an Expression A With the insert mode, use d ande to move the cursor to the right of the key operation you want to edit, press D to delete it, and then perform the correct key operation. With the overwrite mode, move the cursor to the key operation you want to correct and then perform the correct key operation. Example: To correct cos(60) so it becomes sin(60) Insert Mode c60) ( ( ) ) co cos s 60 60 I I dddD )
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d1 ÷ ÷ × × 14 14 1I 1I0 0 2 2 ÷ ÷ × × 14 14 10 10 2 2 w 2 28 8 • Instead of pressing e ord while an error message is displayed to fi nd the location of the error, you could also press A to clear the calculation. Basic Calculations Unless otherwise noted, the calculations in this section can be performed in any of the calculator’s calculation mode, except for the BASE Mode. Arithmetic Calculations k Arithmetic calculations can be used to perform addition (
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A Fraction Calculation Examples 1 2 11 Example 1: 3 + 1 = 4 4 3 1 2 + + 3$1$4+ 3 3{{1 1{{4 4 1 1{{2 2{{3 3 1$2$3w 4 4{{11 11{{12 12 1 1 Example 2: 4 – 3 = 2 2 – – 4 4 3 3{{1 1{{2 2 4-3$1$2w 1 1{{2 2 2 1 7 Example 3: + = (Fraction Display Format: d/c) 3 2 6 + + 2 2{{3 3 1 1{{2 2 2$3+1$2w 7 7{{6 6 Note • If the total number of elements (integer + numerator + denominator + separator symbols) of a fraction calculation resul
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Percent Calculations k Inputting a value and with a percent (%) sign makes the value a percent. The percent (%) sign uses the value immediately before it as the argument, which is simply divided by 100 to get the percentage value. A Percent Calculation Examples 2 Example 1: 2 % = 0.02 ( ) 2% 2% 1 0 0 2!((%)w 002 002 20 Example 2: 150 × 20% = 30 (150 × ) 1 0 0 × × 15 150 0 20 20% % 150*20 (%) !( w 30 30 Example 3:
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Example 8: What is the percentage change when a value is increased from 40 to 46? How about to 48? Insert Mode ( ( ) ) – – ÷ ÷ 46 46 40 40 40 40% % (46-40)/40 (%) !( w 15 15 ( ( ) ) ÷ ÷ 48 48– –40 40 40 40% % eeeeY8w 20 20 k Degree, Minute, Second (Sexagesimal) Calculations You can perform calculations using sexagesimal values, and you can convert between sexagesimal and decimal. A Inputting Sexagesimal Values The following is
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Example: To convert 2.255 to sexagesimal 2.255w 2 2255 255 $ 2 2 15 15 18 18 ˚ ˚ ˚ ˚ $ 2 2255 255 Calculation History and Replay Calculation history maintains a record of each calculation you perform, including the expressions you input and calculation results. You can use calculation history in the COMP, CMPLX, and BASE Modes. Accessing Calculation History k The symbol in the upper right corner of the display indicates that there is data stored in ` calcu
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Using Replay k While a calculation history record is on the display, press d ore to display the cursor and enter the editing mode. Pressing e displays the cursor at the beginning of the calculation expression, while d displays it at the end. After you make the changes you want, press w to execute the calculation. Example: 4 × 3 + 2.5 = 14.5 4 × 3 – 7.1 = 4.9 × × + + 4 4 3 3 2.5 2.5 4*3+2.5w 14 145 5 × × + + 4 4 3 3 2. 2.5 5II d 145 145 × × 4 4 3I 3I DDDD 145 145 × × – – 4 4 3 3 7. 7.
