શ્રેણિક $X$ અને $Y$ માટે,જો $X+Y = \begin{bmatrix} 7 & 0 \\ 2 & 5 \end{bmatrix}$ અને $X-Y = \begin{bmatrix} 3 & 0 \\ 0 & 3 \end{bmatrix}$ હોય,તો $2X =$ . . . . . .

  • A
    $\begin{bmatrix} 10 & 0 \\ 2 & 8 \end{bmatrix}$
  • B
    $\begin{bmatrix} 4 & 0 \\ 2 & 2 \end{bmatrix}$
  • C
    $\begin{bmatrix} 5 & 0 \\ 1 & 4 \end{bmatrix}$
  • D
    $\begin{bmatrix} 2 & 0 \\ 1 & 1 \end{bmatrix}$

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ધારો કે $A = \begin{bmatrix} 1 & 1 & 1 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{bmatrix}$. તો, ધન પૂર્ણાંક $n$ માટે, $A^n$ શું થાય?

જો $A = [1\, 2\, 3]$ અને $B = \begin{bmatrix} -5 & 4 & 0 \\ 0 & 2 & -1 \\ 1 & -3 & 2 \end{bmatrix}$ હોય,તો $AB = $

જો $A+2B = \begin{bmatrix} 1 & 2 & 0 \\ 6 & -3 & 3 \\ -5 & 3 & 1 \end{bmatrix}$ અને $2A-B = \begin{bmatrix} 2 & -1 & 5 \\ 2 & -1 & 6 \\ 0 & 1 & 2 \end{bmatrix}$ હોય, તો $\operatorname{tr}(A)-\operatorname{tr}(B) =$

જો $A = \begin{bmatrix} 1 & 2 & -1 \\ 3 & 0 & 2 \\ 4 & 5 & 0 \end{bmatrix}$ અને $B = \begin{bmatrix} 1 & 0 & 0 \\ 2 & 1 & 0 \\ 0 & 1 & 3 \end{bmatrix}$ હોય,તો $AB$ શું થાય?

જો $\begin{bmatrix} 2 & 3 & 4 \end{bmatrix} \begin{bmatrix} 1 & x & 3 \\ 2 & 4 & 5 \\ 3 & 2 & x \end{bmatrix} \begin{bmatrix} x \\ 2 \\ 0 \end{bmatrix} = O$ હોય,તો $x = $ . . . . . .

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