User manual CASIO FX-P401

[. . . ] Never slide the display end of the unit into the cover. . . . . . 1 . . . . . 2 E-1 Safety Precautions Be sure to read the following safety precautions before using this calculator. Keep this manual handy for later reference. Caution This symbol is used to indicate information that can result in personal injury or material damage if ignored. Batteries · After 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 swallowed. · Keep batteries out of the reach of small children. If accidentally swallowed, consult with a physician immediately. [. . . ] In the case of decimal values, you can select between two formats that determine at what point exponential notation is used. · To change the exponential display format, press the F key a number of times until you reach the exponential display format setup screen shown below. F i x Sc i No r m 1 2 3 · Press 3. On the format selection screen that appears, press 1 to select Norm 1 or 2 for Norm 2. u 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. u 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. · All of the examples in this manual show calculation results using the Norm 1 format. k Decimal Point and Separator Symbols You can use the display setup (Disp) screen to specify the symbols you want for the decimal point and 3-digit separator. · To change the decimal point and separator symbol setting, press the F key a number of times until you reach the setup screen shown below. Disp 1 · Display the selection screen. 1r E-10 · Press the number key ( 1 or 2) that corresponds to the setting you want to use. 1(Dot): Period decimal point, comma separator 2(Comma): Comma decimal point, period separator k Initializing the Calculator · Perform the following key operation when you want to initialize the calculation mode and setup, and clear replay memory and variables. A B 3(All) = Basic Calculations k Arithmetic Calculations COMP Use the F key to enter the COMP Mode when you want to perform basic calculations. COMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F 1 · Negative values inside of calculations must be enclosed within parentheses. For details, see "Order of Operations. " · It is not necessary to enclose a negative exponent within parentheses. sin 2. 34 10­5 S 2. 34 e D 5 · Example 1: 3 (5 10­9) 1. 5 10­8 3-5eD9= · Example 2: 5 (9 7) 80 5-R9+7T= · You can skip all T operations before =. k Fraction Operations uFraction Calculations · Values are displayed in decimal format automatically whenever the total number of digits of a fractional value (integer + numerator + denominator + separator marks) exceeds 10. E-11 · Example 1: 2 3 1 5 13 15 2C3+1C5= 1 · Example 2: 3 4 2 11 1 4 3 12 3C1C4+ 1C2C3= 2 · Example 3: 4 1 · Example 4: 2 13 15. 00 4 11 12. 00 2C4= 1 2 1. 6 2. 1 1 C 2 + 1. 6 = · Results of calculations that mix fraction and decimal values are always decimal. uDecimal Fraction Conversion · Use the operation shown below to convert calculation results between decimal values and fraction values. · Note that conversion can take as long as two seconds to perform. 1(Fix) 3 200 \ 7 = 400. 00000 28. 57100 400. 00000 (Internal calculation continues using 12 digits. ) - 14 = The following performs the same calculation using the specified number of decimal places. F 1 · Certain types of calculations may take a long time to complete. · Wait for the result to appear on the display before starting the next calculation. · = 3. 14159265359 E-17 k Trigonometric/Inverse Trigonometric Functions · To change the default angle unit (degrees, radians, grads), press the F key a number of times until you reach the angle unit setup screen shown below. Deg Rad G r a 1 2 3 · Press the number key (1, 2, or 3) that corresponds to the angle unit you want to use. (90° = 2 radians = 100 grads) · Example 1: sin 63°52o41 0. 897859012 q . . . . . 1 (Deg) S 63 I 52 I 41 I = · Example 2: cos ( rad) 3 q . . . . . 2 (Rad) WRAx\3T= 0. 25 (rad) (rad)) 4 . . . . . 2 (Rad) q 0. 5 · Example 3 : cos 1 2 2 ( AVRL2\2T=g\Ax= · Example 4: tan 1 0. 741 36. 53844577 ° q . . . . . 1 (Deg) A g 0. 741 = k Hyperbolic/Inverse Hyperbolic Functions · Example 1: sinh 3. 6 · Example 2: sinh 1 18. 28545536 4. 094622224 M S 3. 6 = M A j 30 = 30 E-18 k Common and Natural Logarithms/ Antilogarithms · Example 1: log 1. 23 0. 089905111 R 1. 23 = T 90 = TpP= A U 10 = A Q 1. 5 = 2WD3= · Example 2: In 90 (= loge 90) = 4. 49980967 ln e · Example 3: e10 · Example 4: 10 · Example 5: 2 1. 5 1 22026. 46579 31. 6227766 0. 125 16 3 · Example 6: ( 2)4 RD2TW4= · Negative values inside of calculations must be enclosed within parentheses. For details, see "Order of Operations. " k Square Roots, Cube Roots, Roots, Squares, Cubes, Reciprocals, Factorials, Random Numbers, , and Permutation/Combination · Example 1: 3 2 3 3 5 5. 287196909 L2+L3-L5= · Example 2: 5 27 1 ­1. 290024053 A D 5 + A D R D 27 T = · Example 3: 7 123 ( = 123 7 ) 1. 988647795 7 A H 123 = · Example 4: 123 · Example 5: 123 · Example 6: 1 1 3 30 2 1023 123 + 30 K = 12 N = 1728 1 4 12 R3a, 4aTa= 8Af= · Example 7: 8! 40320 E-19 · Example 8: To generate a random number between 0. 000 and 0. 999 AM= · Example 9: 3 0. 66400 3Ax= (The above value is a sample only. Results differ each time. ) 9. 424777961 · Example 10: To determine how many different 4-digit values can be produced using the numbers 1 through 7 · Numbers cannot be duplicated within the same 4-digit (840) value (1234 is allowed, but 1123 is not). 7Am4= · Example 11: To determine how many different 4-member groups can be organized in a group of 10 individuals (210) 10 n 4 = k Angle Unit Conversion · Press A v to display the following menu. D R G 123 · Pressing 1, 2, or 3 converts the displayed value to the corresponding angle unit. [. . . ] E-33 Power Supply The type of battery you should use depends on the model number of your calculator. fx-85MS/fx-300MS The TWO WAY POWER system actually has two power supplies: a solar cell and a G13 Type (LR44) button battery. Normally, calculators equipped with a solar cell alone can operate only when relatively bright light is present. The TWO WAY POWER system, however, lets you continue to use the calculator as long as there is enough light to read the display. · Replacing the Battery Either of the following symptoms indicates battery power is low, and that the battery should be replaced. · Display figures are dim and difficult to read in areas where there is little light available. [. . . ]