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$matrix_3x3->invert()->print_complex("\nInverse of \$matrix_3x3:\n\n")
| 0.05235+0.14079i 0.13718+0.23105i -0.31949-0.16968i |
| 0.09747-0.15162i 0.08303-0.01805i 0.26715+0.02888i |
| 0.22383-0.07040i -0.06859-0.11552i -0.09025+0.08484i |
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