User manual CASIO RM-9850GA PLUS SET

[. . . ] 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. [. . . ] 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. · Calculation history memory is limited. 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-24 Using Calculator Memory Memory Name Description Calculation results can be added to or subtracted from independent memory. The "M" display indicator indicates data in independent memory. Six variables named A, B, C, D, X, and Y can be used for storage of individual values. Answer Memory Stores the last calculation result obtained. Independent Memory Variables This section uses the COMP Mode (N1) to demonstrate how you can use memory. k Answer Memory (Ans) Answer Memory Overview · Answer Memory contents are updated whenever you execute a calculation using any one of the following keys: =, 1=, m, 1m(M­), t, 1t(STO). 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-28 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. LINE (15()/2) 1G(DRG')2(r)= 501G(DRG') 3(g)= Appendix <#018> cos ( radians) = ­1, cos (100 grads) = 0 <#019> cos­1 (­1) = 180 cos­1 (­1) = k Exponential Functions and Logarithmic Functions · For the logarithmic function "log(", you can specify base m using the syntax "log (m, n)". [. . . ] Note that in this case, the original calculation will not be retained in calculation history memory. Math ERROR · Cause · The intermediate or final result of the calculation you are performing exceeds the allowable calculation range. E-49 · Your input exceeds the allowable input range (particularly when using functions). · The calculation you are performing contains an illegal mathematical operation (such as division by zero). · Action · Check the input values, reduce the number of digits, and try again. · When using independent memory or a variable as the argument of a function, make sure that the memory or variable value is within the allowable range for the function. Stack ERROR · Cause · The calculation you are performing has caused the capacity of the numeric stack or the command stack to be exceeded. [. . . ]