import numpy

# zadame matici
q = numpy.array( [[1.0, 0.1, 0.1],
                  [0.1, 1.0, 0.1],
                  [0.1, 0.1, 1.0]])
b = numpy.array( [0.9, 0.8, 0.7 ])

x = numpy.linalg.solve(q,b)
print(x)
print(numpy.linalg.inv(q))