User manual CASIO FX-260 SOLAR

[. . . ] · Avoid using volatile liquids such as thinner or benzine to clean the unit. Wipe it with a soft cloth, or with a cloth that has been dipped in a solution of water and a neutral detergent and wring out. · In no event will the manufacturer and its suppliers be liable to you or any other person for any damages, expenses, lost profits, lost savings, or any other damages arising out of malfunction, repairs, or battery replacement (fx-85B/fx280), or insufficient light. The user should prepare physical records of data to protect against such data loss. [. . . ] 0. 125 22026. 46579 2w3= 2w3E= 10 A U · Example 7: e10 -- 14 -- · Example 8: log sin 40° + log cos 35° (DEG mode) 40 S R +35 W R = ­0. 278567983 To convert to antilogarithm: DEG A Q 0. 526540784 8As3= DEG · Example 9: 81/3 2. k Square Roots, Cube Roots, Squares, Reciprocals and Factorials · Example 1: 2 3 5 2AL+3 AL- 5A L= · Example 2: 3 5 3 5. 287196909 27 5 A D + 27 E A D = ­1. 290024053 · Example 3: 123 302 123 + 30 K = 1 · Example 4: 1 3 1 4 1023. 3AX, 4A X= AX -- 15 -- 12. · Example 5: 8! 8 Af 40320. kFIX, SCI, NORM, RND, RAN#, ENG Calculations · Example 1: 1. 234 1. 234, rounding result to two places (FIX 2). F72 1. 234 +1. 234 = FIX 0. 00 FIX 2. 47 · Example 2: 1. 234 1. 234, rounding input to two places. F 7 2 1. 234 A b + 1. 234 A b = · Press F 9 to clear FIX specification. · Example 3: 1Ö 3 , displaying result with two significant digits (SCI 2). FIX 2. 46 F82 1 \3 = · Press F 9 to clear SCI specification. SCI 0. 0 00 SCI 3. 3­01 -- 16 -- · Example 4: To convert 56, 088 meters to kilometers. 56088 A J 56. 088 03 · Example 5: To convert 0. 08125 grams to milligrams. . 08125 A J 81. 25­03 · Example 6: To generate a random number between 0. 000 and 0. 999. Example (results differ each time) Ac 0. 664 kCoordinate Conversion · Example 1: To convert polar coordinates (r 2, rectangular coordinates (x, y). (DEG mode) x y 2 A z 60 = 60°) to DEG 1. DEG AN 1. 732050808 A N swaps displayed value with value in memory. · Example 2: To convert rectangular coordinates (1, 3) to polar coordinates (r, ). (RAD mode) r 1Ay 3AL = RAD 2. -- 17 -- A N 1. 047197551 RAD kPermutation · Example: To determine how many different 4-digit values can be produced using the numbers 1 through 7. 7Am4= 840. kCombination · Example: To determine how many different 4-member groups can be organized in a group of 10 individuals. 10 A n 4 = 210. Statistical Calculations (SD Mode) · Press F l to enter the SD Mode for statistical calculations using standard deviation. · Example: To calculate n 1, n, o, n, x, and following data : 55, 54, 51, 55, 53, 53, 54, 52. Enter SD Mode. x2 for the Fl -- 18 -- 0. SD Input Data. A u 55 } 54 } 51 } 55 } 53 } } 54 } 52 } SD 52. SD Sample standard deviation Aq Ap A` Ar Ao Aa 1. 407885953 SD Population standard deviation 1. 316956719 SD Arithmetic mean 53. 375 SD Number of data 8. SD Sum of values 427. SD Sum of squares of values 22805. · } } inputs the same data twice (as above). · You can also input multiple entries of the same data using -. · The above results can be obtained in any order, and not necessarily that shown above. · To delete data you have just input, press A [. -- 19 -- kMaking Corrections During Data Input · Example 1: To change data you have just input. Correct 51 } 130 31 } 130 31 } Actual 50 } 120 120 31 Correction A[ 51 } t130 31 } t130 31 } · Example 2: To change data you previously input. Correct 51 } 130 31 } Actual 49 } 120 30 } Correction 49 A [ 51 } 120 - 30 A [130 31 } -- 20 -- Technical Information kKeys and Their Functions · General Arithmetic calculations . . . . . . . . . . . . . . . . . . . . . . . . . . E · Memory Memory in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A n -- 23 -- · Statistics (SD Mode) Arithmetic mean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A o kExponential Display Formats This calculator can display up to 10 digits. In the case of decimal value, you can select between two formats that determine at what point exponential notation is used. · NORM 1 With NORM 1, exponential notation is automatically used for integer values with more than 10 digits and decimal values with more than two decimal places. · NORM 2 With NORM 2, exponential notation is automatically used for integer values with more than 10 digits and decimal values with more than nine decimal places. -- 24 -- To switch between NORM 1 and NORM 2 Press F 9. There is no indication on the display of which format is currently in effect, but you can determine the setting by performing the following calculation. ­03 0. 005 NORM 1 format NORM 2 format · All of the examples in this manual show calculation results using the NORM 1 format. kWhen you have a problem. . . If calculation results are not what you expect or if an error occurs, perform the following steps. Enter the correct modes to perform the calculation and try again. kMaking Corrections During Calculations · If you make a mistake when inputting a value (but did not yet press an operator key), use Q to backspace and delete input digits one-by-one. Or you can press k to clear the input entirely and start again. -- 25 -- · In a series of calculations, press k while an intermediate result is displayed to clear only the last calculation performed. [. . . ] There are six registers, so calculations up to six levels can be stored. · Each level can contain up to three open parentheses, so parentheses can be nested up to 18 times. · Example: The following operation uses 4 levels and 5 nested parentheses. 2-O OO3 +4 -OO5 +4 The table on the next page shows register contents following the above input. -- 29 -- Register x L1 L2 L3 L4 L5 L6 4 Contents (( 5 4 ((( 3 2 kFormulas, Ranges, and Conventions The following are the formulas, ranges, and conventions that are applied to various calculations that can be performed using this calculator. [. . . ]