જો $2\left|\begin{array}{ll}\sin ( A + B ) & \cos ( A + B ) \\ \cos ( A - B ) & \sin ( A - B )\end{array}\right|+\sqrt{3}= 0$ હોય,તો $A =$ . . . . . . .

  • A
    $\frac{\pi}{6}$
  • B
    $\frac{\pi}{12}$
  • C
    $\frac{\pi}{3}$
  • D
    $\frac{\pi}{4}$

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શ્રેણિક $\begin{bmatrix} 1 & a & 2 \\ 1 & 2 & 5 \\ 2 & 1 & 1 \end{bmatrix}$ વ્યસ્ત ન હોય જો $a$ ની કિંમત . . . હોય.

જો $(x, y, z) \ne (0, 0, 0)$ અને $(i + j + 3k)x + (3i - 3j + k)y + (-4i + 5j)z = \lambda (xi + yj + zk)$ હોય, તો $\lambda$ ની કિંમત શું હશે?

ધારો કે $A = \begin{bmatrix} 5 & 5\alpha & \alpha \\ 0 & \alpha & 5\alpha \\ 0 & 0 & 5 \end{bmatrix}$. જો $|A|^2 = 25$ હોય,તો $|\alpha|$ ની કિંમત શોધો.

ત્રણ બિંદુઓ $(p + 1, 1)$,$(2p + 1, 3)$ અને $(2p + 2, 2p)$ સમરેખ હોય,તો $p =$

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