def main():
Format()
a = Matrix(2, 2, (1, 2, 3, 4))
b = Matrix(2, 1, (5, 6))
c = a*b
print(a, b, '=', c)
x, y = symbols('x, y')
d = Matrix(1, 2, (x**3, y**3))
e = Matrix(2, 2, (x**2, 2*x*y, 2*x*y, y**2))
f = d*e
print('%', d, e, '=', f)
xdvi()
return
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