શ્રેણિક $\left[\begin{array}{ccc}1 & -1 & 1 \\ 1 & 1 & -1 \\ -1 & 1 & 1\end{array}\right]$ નો નિશ્ચાયક (Rank) શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $3$

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ધારો કે $f(x) = \left| \begin{array}{ccc} 2\cos^2 x & \sin(2x) & -\sin x \\ \sin(2x) & 2\sin^2 x & \cos x \\ \sin x & -\cos x & 0 \end{array} \right|$. તો,$\int_{0}^{\frac{\pi}{2}} [f(x) + f'(x)] dx$ ની કિંમત શોધો.

શ્રેણિક $\begin{bmatrix} -1 & 2 & 5 \\ 2 & -4 & a - 4 \\ 1 & -2 & a + 1 \end{bmatrix}$ નો નિશ્ચાયક (rank) શું છે?

અમુક $a, b$ માટે,ધારો કે $f(x) = \left|\begin{array}{ccc} a+\frac{\sin x}{x} & 1 & b \\ a & 1+\frac{\sin x}{x} & b \\ a & 1 & b+\frac{\sin x}{x} \end{array}\right|, \quad x \neq 0$. જો $\lim_{x \rightarrow 0} f(x) = \lambda + \mu a + \nu b$ હોય,તો $(\lambda + \mu + \nu)^2$ ની કિંમત શોધો:

$\triangle ABC$ માટે,નિશ્ચાયકનું મૂલ્ય શોધો: $\left|\begin{array}{ccc}0 & \sin A & \tan B \\ -\sin ( B + C ) & 0 & \cos C \\ \tan ( A + C ) & -\cos C & 0\end{array}\right|=$ . . . . . . .

જો $A = \begin{bmatrix} \sqrt{2020} & \sqrt{2021} & \sqrt{2022} & \sqrt{2023} \\ \sqrt{4040} & \sqrt{4042} & \sqrt{4044} & \sqrt{4046} \\ \sqrt{6060} & \sqrt{6063} & \sqrt{6066} & \sqrt{6069} \\ \sqrt{8080} & \sqrt{8084} & \sqrt{8088} & \sqrt{8092} \end{bmatrix}$ હોય,તો $A$ નો શ્રેણિકનો ક્રમ (rank) શોધો.

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