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import numpy as np
import sympy as sym
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a11, a12, a21, a22, b11, b12, b21, b22 = sym.symbols('a11 a12 a21 a22 b11 b12 b21 b22')
A = sym.Matrix([[a11, a12], [a21, a22]])
B = sym.Matrix([[b11, b12], [b21, b22]])
print(A,B)
#x = np.array([[1,2,3,4]])
#y = np.array([[4,5,6,7]]).T
#print(x.shape,y.shape)
#print(np.dot(x,y))
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