Casio FX300ES Operating Guide - Page 19

Note: • You will not be able to execute prime factorization while a decimal value, fraction, or negative value calculation result is displayed. Trying to do so will cause a math error (Math ERROR). • You will not be able to execute prime factorization while the result of a calculation that uses Pol, Rec, ÷R is displayed. Remainder Calculations You can use the ÷R function in order to obtain the quotient and remainder in a division calculation. To calculate the quotient and remainder of 5 ÷ 2 Math B 5 !D(÷R) 2 = b 5 !D(÷R) 2 = Quotient Remainder Quotient Remainder Note: • Only the quotient value of a ÷R calculation is stored in Ans memory. • Assigning the result of a remainder division calculation to a variable will assign the quotient value only. Performing the operation 5 !D(÷R) 2 !t(STO))(X)
(which assigns the result of 5÷R2 to X) will assign a value of 2 to X. • If a ÷R calculation is part of a multi-step calculation, only the quotient is passed on to the next operation. (Example: 10 + 17 !D (÷R) 6 = → 10 + 2) • Operation of the f and e keys is disabled while a remainder division result is on the display. Cases when Remainder Division becomes Non-remainder Division If either of the following conditions exists when you perform a remainder division operation, the calculation will be treated as normal (non-remainder) division. • When either the dividend or the divisor is a very large value Example: 20000000000 !D(÷R) 17 = → Calculated as: 20000000000 ÷ 17 • When the quotient is not a positive integer, or if the remainder is not a positive integer or positive fractional value Example: - 5 !D(÷R) 2 = → Calculated as: -5 ÷ 2 Function Calculations For actual operations using each function, see the "Examples" section following the list below. π : π is displayed as 3.141592654, but π = 3.14159265358980 is used for internal calculations. e : e is displayed as 2.718281828, but e = 2.71828182845904 is used for internal calculations. E-18