With 696 functions, the FX-991DE CW calculator is the most powerful model in the technical and scientific calculator. The innovative operation and menu navigation simplifies the use of the computer for students. On abbreviations and Shortcuts are largely unnecessary. Mathematical expressions such as roots, fractions and logarithms are represented in natural notation.
Not programmableNot graphic-capable10 + 2 digitsNatural Textbook displayIcon menuPoint screen displayHigh resolution:4-bit gray displayPlastic keysNegative signTo switch off9 VARIABLES (A-F, X-Z)Variable listResponse memoryFunction memoryMemory protectionReset functionDigit format: FixedNumber format: SCIDigit format: StandardCalculation of periodic decimal numbersCalculation with technical symbolsTechnical notationConversion of fractions/decimal numbersAngle unit (degrees, radian, gon)Bad/mixed fractureExaginal decimal conversionThousands separationSimple calculationBracket calculationFractionsCalculate with RestDegrees, minutes, seconds calculations (Sexagessimal system)Horseshoe curve calculationPercentage calculation (function of scientific calculator)Faculty functionCalculation of irrational numbersRounding functionContinuous calculationRepeat functionMultiple repetitionsRecall buttonSolve functionVerifyEulersche number eBase N calculationLogical operators:Calculation with complex numbersMatrix calculationsVector calculationsRatio calculationValue tableEquation systemsSimultaneous equationPolynomial equationInequality calculationsList-based STAT data editorStatistics with 1 variablesStatistics and regression with 2 variablesDistribution functionsMathematics box (Coin/Cube)Math box (number line/circle)Mathematical basic functionsButton xAbsolute value calculationSquare and square root (x²/√)Power and root (xʸ/x√)Trigonometric, inversely trigonometric (sin/cos/tan/sin⁻¹/cos-/tan⁻¹)Hyperbolic, inversely hyperbolic (sinh/cosh/tan/sinh⁻¹/cosh⁻¹/tan⁻¹)Exponential, logarithmic (log, ln, 10ˣ, eˣ)loga (b)Coordinate conversionCombination/permutationGCD/KGVDetermine the integer partPrime factorizationRandom number generatorInteger random numbersSum numbersProduct marksDifferential calculationIntegral calculationScientific constantsMetric conversion functionList-based STAT data editor
The math box can be used to simulate cube and coin throwing attempts. The relative frequencies of the totals can be listed.
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