Solving equations, system of equations, integrals, primitive,limited,,,, For secondary school students, students and teachers.For example illustrates how to use: Solving equations, no equation:x ^ 2 +3 x +2 = 0 solve System of equations: x ^ 2 + y ^ 2 = 0, xy+ x + y = 3 Solve Graphing: sin (x) plot Originally function: intxlnx Integral: xlnx, 1 .. e int Derivative: ln (x ^ 2 +1) derDerivative at 1 point: ln (x), x = 1 der Limit at the sites of: (x^ 2-1) / (2x-1) lim Limit at 1 point: (2x +1) / (x +2), x-> 1lim Analysis multiplier: x ^ 4 +1 fac Archive calculations: (1 +2i) ^ 2 / (1 + i) sim The maximum value, minimum (With or withoutconditions): x ^ 4-2x ^ 2 +3.1 <= x <= 3 max (min) x ^ 3 + y^ 3, x ^ 2 + y ^ 2 = 2 min Total: 1 / (x (x +1)), x = 1 .. 100 sum...