User manual CASIO FX-570W

[. . . ] Never slide the display end of the unit into the cover. . . . . . 1 . . . . . 2 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. · Never charge batteries, try to take batteries apart, or allow batteries to become shorted. Never expose batteries to direct heat or dispose of them by incineration. [. . . ] 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. 10 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. fx-95MS: 1r Other Models: 1 r r · 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. F 1 · Negative values inside of calculations must be enclosed within parentheses. sin ­1. 23 S R D 1. 23 T 11 · 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. (160%) 300 + 500 A v · Example 7: What is the percentage change when a value is increased from 40 to 46?(15%, 20%) 46 , 40 A v eeeeee8= 14 * k Degrees, Minutes, Seconds Calculations · You can perform sexagesimal calculations using degrees (hours), minutes, and seconds, and convert between sexagesimal and decimal values. 1 · Example 6: 12 1 1 3 4 R3a, 4aTa= · Example 7: 8! 40320 8Af= · 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 value (1234 is allowed, but 1123 is not). (840) 7Am4= · Example 11: To determine how many different 4-member groups can be organized in a group of 10 individuals (210) 10 n* 4 = 20 * A n in the case of fx-100MS/fx-115MS/fx-570MS/ fx-991MS. k Angle Unit Conversion · Press A v to display the following menu. D R G 12 3 · Pressing 1, 2, or 3 converts the displayed value to the corresponding angle unit. 25 r 243. 5070629 k Coordinate Conversion (Pol (x, y), Rec (r, )) · Calculation results are automatically assigned to variables E and F. · Example 1: To convert polar coordinates (r 2, to rectangular coordinates (x, y) (Deg) x y 60°) 1 1. 732050808 A F 2 P 60 T = 0o · Press 0 n to display the value of x, or 0 o to display the value of y. · Example 2: To convert rectangular coordinates (1, 3) to polar coordinates (r, ) (Rad) r2 f* 1 P L 3 T = * A f in the case of fx-100MS/fx-115MS/fx-570MS/ fx-991MS. 1. 047197551 0o · Press 0 n to display the value of r, or 0 o to display the value of . 21 k Engineering Notation Calculations · Example 1: To convert 56, 088 meters to kilometers 56. 088 10 3 (km) 10 ­3 (mg) 56088 = J · Example 2: To convert 0. 08125 grams to milligrams 81. 25 0. 08125 = J Equation Calculations EQN The EQN Mode lets you solve equations up to three degrees and simultaneous linear equations with up to three unknowns. Use the F key to enter the EQN Mode when you want to solve an equation. F F 1 (fx-95MS) F F F 1 (Other Models) k Quadratic and Cubic Equations Quadratic Equation: ax2 + bx + c = 0 Cubic Equation: ax3 + bx2 + cx + d = 0 Entering the EQN Mode and pressing r displays the initial quadratic/cubic equation screen. Deg r ee? 2 3 Use this screen to specify 2 (quadratic) or 3 (cubic) as the degree of the equation, and input values for each of the coefficients. Coefficient name Arrow indicates direction you should scroll to view other elements. a? 0. Element value 22 · Any time until you input a value for the final coefficient (c for a quadratic equation, d for a cubic equation), you can use the [ and ] keys to move between coefficients on the screen and make changes, if you want. Calculation starts and one of the solutions appears as soon as you input a value for the final coefficient. Variable name Arrow indicates direction you should scroll to view other solutions. x1= 0. Solution Press the ] key to view other solutions. Pressing the t key at this point returns to the coefficient input screen. [. . . ] · Divide your calculation into two or more separate parts. Syntax ERROR · Cause · An attempt to perform an illegal mathematical operation. · Action · Press e or r to display the calculation with the cursor located at the location of the error and make required corrections. Arg ERROR · Cause · Improper use of an argument 33 · Action · Press e or r to display the location of the cause of the error and make required corrections. k Order of Operations Calculations are performed in the following order of precedence. 1 Coordinate transformation: Pol (x, y), Rec (r, ) Differentials: d/dx* Integrations: dx* Normal distribution: P(*, Q(*, R(* 2 Type A functions: With these functions, the value is entered and then the function key is pressed. x3, x2, x 1, x!, ° ' " Engineering symbols* Normal distribution: t * m, m1, m2, n Angle unit conversions (DRG') Metric conversions** 3 Powers and roots: ^ (xy), x 4 a b/c 5 Abbreviated multiplication format in front of , e (natural logarithm base), memory name, or variable name: 2, 3e, 5A, A, etc. [. . . ]