    Scientific calculator 300 es plus, 991 ex is the calculator for students and engineering student. Calculator 991 es plus provides powerful functions in a real calculator 991 ex 300 ex. It makes advanced calculator 991 ex become the most useful calculator for university and school.

Application includes some calculators inside:
- Basic calculator 300 es plus
- Advanced calculator 115 es plus
- Scientific calculator 991 ex
- Scientific calculator 991 es plus
- Graphing calculator 84 plus

Let's see some special features:

◉ Basic calculator 300 es plus and 115 es plus: supports from basic mathematics to advanced math functions: percentage, powers, roots, trigonometric, logarithms calculator. Fraction calculation 991 ex supports convert fraction to decimal, mixed fraction and solve fractions problems.

◉ Advanced calculator 115 es plus: combines of hyper calculator and simple scientific calc. This calculator is a multi-functional advanced calculator 991 ex with all features in one app. Such as linear algebra, calculus, complex numbers, display result in rectangular and polar coordinates, matrix and vector.

◉ Scientific calculator 991 es plus: includes smart equation solver. Equation solver can solve quadratic, cubic equations, systems of equations. Caluculator solves any polynomial. Smart scientific calculator 991 ex has exponent calculator contains scientific calculations such as derivative, integral, square root calculation, factorial calculation, pi calculation, equation solver.

◉ Scientific calculator 991 ex: supports calculate with infinity number of digits, prime factors, random numbers, combinations, permutations, GCD and LCM. This calculator 991ex is a real engineering simulator. Scientific calculator has features of 500 es, 500 ms, 300 es plus, 991 es plus. Calculator keyboard layout same as calculator 300 es plus, 991 ex and es plus.

◉ Graphing calculator 84 plus supports function graph, polar, parametric and implicit function. Graphing calculator 84 can draw tangent, tracing, derivative, root, min and max. It simulates for graphing caluculator 83 and t1 84, 84 plus.

◉ Integral calculator 991 es plus provide powerful calculator to calculate integrate, derivative, differentiation and integration.

◉ This scientific calculator 991ex includes CAS (computer algebra system), which can perform symbolic calculation.

◉ Some other features: math formula, physics formula, unit conversion, theme, font and programming.

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