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Jonask Group Title

matrices

  • 2 years ago
  • 2 years ago

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  1. Jonask Group Title
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    \[x_1+2x_2+x_3=5\] \[4x_1+7x_2+8x_3=9\] \[2x_1+3x_2+5x_3=1\] a) write the system in a matrix multiplication AX=Y

    • 2 years ago
  2. Jonask Group Title
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    is it \[\left[\begin{matrix}1 & 2 &1\\ 4 & 7& 8\end{matrix}\right]\left[\begin{matrix}x_1 \\ x_n\end{matrix}\right]=\left[\begin{matrix}5 \\ 9\\1\end{matrix}\right]\]

    • 2 years ago
  3. nubeer Group Title
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    hmm you missed one rown in the end in the A matrix.

    • 2 years ago
  4. nubeer Group Title
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    @Jonask

    • 2 years ago
  5. UnkleRhaukus Group Title
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    \[\left[\begin{matrix}1 & 2 &1\\ 4 & 7& 8\\2&3&5\end{matrix}\right]\left[\begin{matrix}x_1 \\ x_2\\x_3\end{matrix}\right]=\left[\begin{matrix}5 \\ 9\\1\end{matrix}\right]\]

    • 2 years ago
  6. Jonask Group Title
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    oh yes thank you how do we find the det(A) Adj(A)

    • 2 years ago
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