Casio fx-991W Calculator User Manual


 
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Contents
Safety Precautions .......................................... 1
Handling Precautions ....................................... 2
Two-line Display ............................................... 5
Key Layout ........................................................ 6
Before Starting Calculations... ....................... 8
kModes .................................................................... 8
kInput Capacity ........................................................ 9
kMaking Corrections During Input ........................... 9
kReplay Function ..................................................... 9
kError Locator ........................................................ 10
kExponential Display Formats ............................... 10
kAnswer Memory ................................................... 10
Basic Calculations ......................................... 11
Memory Calculations ..................................... 11
kIndependent Memory ........................................... 11
kVariables .............................................................. 11
Fraction Calculations ..................................... 12
kFraction Calculations ........................................... 12
kDecimal-to-Fraction Conversion........................... 12
kFraction-to-Decimal Conversion .......................... 12
Percentage Calculations ................................13
Scientific Function Calculations ................... 14
kTr igonometric/Inverse Trigonometric Functions .... 14
kHyperbolic/Inverse Hyperbolic Functions ............ 14
kAngle Unit Conversion ......................................... 15
kCommon and Natural Logarithms/
Antilogarithms ...................................................... 15
kSquare Roots, Cube Roots, Roots, Squares,
Cubes, Reciprocals, Factorials,
Random Numbers and π .......................................... 15
kFIX, SCI, RND ..................................................... 16
kENG Calculations ................................................ 17
kInputting ENG Calculation Symbols ..................... 17
kCoordinate Conversion
(Pol(x, y), Rec (r,
θ
)) ............
18
kPermutation.......................................................... 19
kCombination ......................................................... 19