Advanced fx calculator 991 es plus & 991 ms plus v4.1.1 Pro APK

Descriptions : Advanced Scientific Calculator offers over a hundred functions and everything you need for most mathematical calculations. The calculator's functions include complex numerical calculations, matrix and vector calculations, statistics and 40 metric conversions. The salient feature is the two-line natural textbook display that displays fractions, formulas, square roots, and other expressions like a textbook.
Features :

+ Equation solver
+ 20 value pairs for the metric conversion
+ Calculation with complex numbers
+ Calc key (temporary formula memory)
+ 40 physical constants
+ Matrix / vector calculation
+ Numerical integral and differential calculus
+ Random integers
+ New equation mode
+ Function table
+ Solve equation system (two, three, four unknown variables)
+ Periodic numbers and conversion into fractions
+ Generate random numbers, combinations, permutations, GCD, LCM
+ Statistics calculation, regression calculation, normal distribution

Required Android Versions : Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]

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Advanced Calculator FX 991 ES PLUS and 991 MS PLUS Premium v4.1.1.apk