User manual CASIO FX-85W

[. . . ] The alternate function is indicated by the text printed above the key. Alternate function sin Keycap function ­1 s D · The following shows what the different colors of the alternate function key text mean. If key marking text is this color: Yellow Red It means this: Press 1 and then the key to access the applicable function. Press S and then the key to input the applicable variable, constant, or symbol. · The following shows an example of how an alternate function operation is represented in this User's Guide. Example: 1s(sin­1)1= Indicates the function that is accessed by the key operation (1s) before it. [. . . ] (15%, 20%) <#005> <#006> <#007> <#008> <#009> k Degree, Minute, Second (Sexagesimal) Calculations You can perform calculations using sexagesimal values, and convert values between sexagesimal and decimal. Inputting Sexagesimal Values The following is the syntax for inputting a sexagesimal value. {Degrees}e{Minutes}e{Seconds}e Appendix <#011> Input 2°0´30. · Note that you must always input something for the degrees and minutes, even if they are zero. E-21 Sexagesimal Calculations · Performing the following types of sexagesimal calculations produces a sexagesimal result. - Addition or subtraction of two sexagesimal values - Multiplication or division of a sexagesimal value and a decimal value Appendix <#012> 2°20´30 + 39´30 = 3°00´00 Converting Values between Sexagesimal and Decimal Pressing e while a calculation result is displayed toggles the value between sexagesimal and decimal. Appendix <#013> Convert 2. 255 to its sexagesimal equivalent. Using Multi-statements in Calculations You can use the colon character (:) to connect two or more expressions and execute them in sequence from left to right when you press =. Example: To create a multi-statement that performs the following two calculations: 3 + 3 and 3 × 3 LINE 3+3SW(:)3*3 Disp = "Disp" indicates this is an intermediate result of a multi-statement. = E-22 Using Calculation History Memory and Replay (COMP) Calculation history memory maintains a record of each calculation expression you input and execute, and its result. You can use calculation history memory in the COMP Mode (N1) only. Recalling Calculation History Memory Contents Press f to back-step through calculation history memory contents. Calculation history memory shows both calculation expressions and results. Example: LINE 1+1= 2+2= 3+3= f f · Note that calculation history memory contents are cleared whenever you turn off the calculator, press the O key, change to the calculation mode or the input/output format, or perform any reset operation. When the calculation you are performing causes calculation history memory to become full, the oldest calculation is deleted automatically to make room for the new calculation. Replay Function While a calculation result is on the display, you can press A and then d or e to edit the expression you used for the previous calculation. If you are using Linear format, you can display the expression by pressing d or e, without pressing A first. Appendix <#014> E-23 Using Calculator Memory Memory Name Description Calculation results can be added to or subtracted from independent memory. Before performing an operation, be sure to wait until execution of the current operation is complete. You can interrupt an ongoing operation by pressing A. k Pi () and Natural Logarithm Base e You can input pi () or natural logarithm base e into a calculation. The following shows the required key operations and the values this calculator uses for pi () and e. = 3. 14159265358980 (15()) e = 2. 71828182845904 (S5(e)) k Trigonometric and Inverse Trigonometric Functions · The angle unit required by trigonometric and inverse trigonometric functions is one specified as the calculator's default angle unit. Before performing a calculation, be sure to specify the default angle unit you want to use. See "Specifying the Default Angle Unit" for more information. Appendix <#016> sin 30 = 0. 5, sin­10. 5 = 30 k Hyperbolic and Inverse Hyperbolic Functions Pressing the w key displays a menu of functions. Press the number key that corresponds to the function you want to input. Appendix <#017> sinh 1 = 1. 175201194, cosh­1 1 = 0 E-27 k Converting an Input Value to the Calculator's Default Angle Unit After inputting a value, press 1G(DRG') to display the angle unit specification menu shown below. Press the number key that corresponds to the angle unit of the input value. The calculator will automatically convert it to the calculator's default angle unit. Example: To convert the following values to degrees: radians = 90°, 50 grads = 45° 2 The following procedure assumes that the calculator's default angle unit is degrees. [. . . ] · Action · Simplify the calculation expression so it does not exceed the capacity of the stack. · Try splitting the calculation into two or more parts. Syntax ERROR · Cause · There is a problem with the format of the calculation you are performing. · Action · Make necessary corrections. E-47 Insufficient MEM Error · Cause · There is not enough memory to perform your calculation. · Action · Narrow the table calculation range by changing the Start, End, and Step values, and try again. k Before assuming malfunction of the calculator. . . Perform the following steps whenever an error occurs during a calculation or when calculation results are not what you expected. [. . . ]