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Is the given matrix in echelon form? If not, convert it to reduced echelon form.

Mathematics

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✅ Correct.

Haan, yeh matrix echelon form mein hai.

Echelon form ki sharaait:

  • Har non-zero row zero rows ke upar hai.
  • Har non-zero row ka leading entry (pivot) uske upar wali row ke leading entry ke right mein hai.
  • Leading entry ke neeche ke saare elements zero hain.

Lekin, yeh reduced echelon form mein nahi hai. Reduced echelon form ke liye, har leading entry 1 honi chahiye aur us column mein leading entry ke ilawa baaki saare elements zero hone chahiye.

Aage ke steps reduced echelon form ke liye:

  1. R2→12R2R_2 \to \frac{1}{2}R_2

    [12−1300110000]\begin{bmatrix} 1 & 2 & -1 & 3 \\ 0 & 0 & 1 & 1 \\ 0 & 0 & 0 & 0 \end{bmatrix}
  2. R1→R1+R2R_1 \to R_1 + R_2

    [120400110000]\begin{bmatrix} 1 & 2 & 0 & 4 \\ 0 & 0 & 1 & 1 \\ 0 & 0 & 0 & 0 \end{bmatrix}

    Yeh matrix ab reduced echelon form mein hai.

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