User manual SHARP EL-5020

[. . . ] Keep batteries out of the reach of children. This product, including accessories, may change due to upgrading without prior notice. SHARP strongly recommends that separate permanent written records be kept of all important data. Data may be lost or altered in virtually any electronic memory product under certain circumstances. [. . . ] [Independent memory (M)] In addition to all the features of temporary memories, a value can be added to or subtracted from an existing memory value. Press ªOM to clear the independent memory (M). [Last answer memory (ANS)] The calculation result obtained by pressing = or any other calculation ending instruction is automatically stored in the last answer memory. ) Storing a new equation in each memory will automatically replace the existing equation. note: · Calculation results from the functions indicated below are automatically stored in memories X or Y replacing existing values. X memory (r or x), Y memory ( or y) · Use of R or K will recall the value stored in memory using up to 14 digits. The previous calculation result can be used in the subsequent calculation. However, it cannot be recalled after entering multiple instructions or when the calculation result is in Matrix/List format. Arithmetic operations and memory calculations can be performed using fractions, and conversion between a decimal number and a fraction. If the number of digits to be displayed is greater than 10, the number is converted to and displayed as a decimal number. Conversions can be performed between N-base numbers. Only numerical values are allowed as variables. Upon completing the calculation, press @ to perform calculations using the same formula. Performing simulation calculation will cause memory locations to be overwritten with new values. The seven statistical calculations listed below can be performed. After selecting the statistics mode, select the desired sub-mode by pressing the number key corresponding to your choice. to change statistical sub-mode , reselect statistics mode (press m1) , then select the required sub-mode. 0 (SD) : Single-variable statistics 1 (LINE) : Linear regression calculation 2 (QUAD) : Quadratic regression calculation 3 (EXP) : Exponential regression calculation 4 (LOG) : Logarithmic regression calculation 5 (PWR) : Power regression calculation 6 (INV) : Inverse regression calculation The following statistics can be obtained for each statistical calculation (refer to the table on the next page): Statistics of Q and W and, in addition, estimate of y for a given x (estimate y´) and estimate of x for a given y (estimate x´) In addition, estimate of y for a given x and estimate of x for a given y. (Since the calculator converts each formula into a linear regression formula before actual calculation takes place, it obtains all statistics, except coefficients a and b, from converted data rather than entered data. When performing calculations using a, b and c, only one numeric value can be held. Entered data are kept in memory until @c or mode selection. Before entering new data, clear the memory contents. [. . . ] An equation must be shorter than 142 characters. equation recall error (Error 5): · The stored equation contains a function not available in the mode used to recall the equation. For example, if a numerical value with numbers other than 0 and 1 is stored as a decimal, etc. , it cannot be recalled when the calculator is set to binary. [. . . ]