kittycat2733 kittycat2733
  • 16-02-2024
  • Mathematics
contestada

Solve the system by inverting the coefficient matrix and using the following theorem:
If a is an invertible n×1 matrix, then for each n×1 matrix b, the system of equations ax=b has exactly one solution, namely, x=a⁻¹b.
x1+x2=4
6x1+7x2=9
x1=
x2=

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