Python3, Python Matplotlib, Numpy, Differential Calculus, Derivation.
np.linalg.solve(A,b) print(x) [-2. 1.] So the points are x=−2; y=1 Here are The 3 Equations (y1, y2 and y3): x, y = sy.symbols('x y') y1 = 3*x**2 + 2*x*y + y**2 + 10*x + 2*y + 1 y2 = 6*x + 2*y + 10 y3 = 2*x + 2*y + 2 Calculation of The First and the Second Partial Differentiation: Discriminant —