#範例3-8：sympy用反矩陣解聯立方程式
from sympy import *
A = Matrix([
    [3, 2,-1],
    [1, 6,3],
    [2, -4,0]
])
B = Matrix([
    [3],
    [5],
    [6]
])

A_inv = A.inv()
print('求解=', A_inv @ B)