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|----+----+----+----+----+----5 |FLT |FIX |SCI |ENG |GRP | | |----+----+----+----+----+----| |RAD |DEG |FRAC|POLR|SYMB|PREC| |----+----+----+----+----+----| |SWAP|RLL3|RLL4|OVER|STO |RCL | |----+----+----+----+----+----| |
The keys in this menu manipulate modes, variables, and the stack.
The FLT, FIX, SCI, and ENG keys select floating-point, fixed-point, scientific, or engineering notation. FIX displays two digits after the decimal by default; the others display full precision. With the INV prefix, these keys pop a number-of-digits argument from the stack.
The GRP key turns grouping of digits with commas on or off. INV GRP enables grouping to the right of the decimal point as well as to the left.
The RAD and DEG keys switch between radians and degrees for trigonometric functions.
The FRAC key turns Fraction mode on or off. This affects whether commands like / with integer arguments produce fractional or floating-point results.
The POLR key turns Polar mode on or off, determining whether polar or rectangular complex numbers are used by default.
The SYMB key turns Symbolic mode on or off, in which operations that would produce inexact floating-point results are left unevaluated as algebraic formulas.
The PREC key selects the current precision. Answer with the keyboard or with the keypad digit and ENTER keys.
The SWAP key exchanges the top two stack elements. The RLL3 key rotates the top three stack elements upwards. The RLL4 key rotates the top four stack elements upwards. The OVER key duplicates the second-to-top stack element.
The STO and RCL keys are analogous to s t and s r in regular Calc. See section 13. Storing and Recalling. Click the STO or RCL key, then one of the ten digits. (Named variables are not available in Keypad Mode.) You can also use, for example, STO + 3 to add to register 3.
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