Casio FX-55 User Guide - Page 15
Calculation Ranges, Number of Digits, and Precision
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l= F=5, 5 6 l= 5 6 When further simplification is not possible, "Simplified" appears momentarily on the display and then the calculation result is displayed. When a divisor of 3 is specified: 18 = 6 21 7 18 ' 21 =l 3 = F=3, 6 7 or 18 ' 21 el 3 = F=3, 6 7 Calculation Ranges, Number of Digits, and Precision The calculation range, number of digits used for internal calculation, and calculation precision depend on the type of calculation you are performing. Calculation Range and Precision Calculation Range Number of Digits for Internal Calculation Precision ±1 × 10-99 to ±9.999999999 × 1099 or 0 15 digits In general, ±1 at the 10th digit for a single calculation. Precision for exponential display is ±1 at the least significant digit. Errors are cumulative in the case of consecutive calculations. Function Calculation Input Ranges and Precision Functions Input Range 10x -9.999999999 × 1099 Ϲ x Ϲ 99.99999999 'x 0 Ϲ x Ͻ 1 × 10100 x2 |x| Ͻ 1 × 1050 x -1 |x| Ͻ 1 × 10100 ; x G 0 |a|, b, c Ͻ 1 × 10100; 0 Ϲ b, c °' " The display seconds value is subject to an error of ±1 at the second decimal place. x Ͼ 0: -1 × 10100 Ͻ ylogx Ͻ 100 x = 0: y Ͼ 0 xy x Ͻ 0: y = n, m (m, n are integers) 2n+1 However: -1 × 10100 Ͻ ylog |x| Ͻ 100 a b/c Total of integer, numerator, and denominator must be 10 digits or less (including division marks). E-14