જો $A(x) = \left| \begin{array}{ccc} 1 & 2 & 3 \\ x+1 & 2x+1 & 3x+1 \\ x^2+1 & 2x^2+1 & 3x^2+1 \end{array} \right|$ હોય, તો $\int_0^1 A(x) \, dx$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $4$

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જો શ્રેણિક $A=\left[\begin{array}{cccc}1 & 2 & 3 & 0 \\ 2 & 4 & 3 & 2 \\ 3 & 2 & 1 & 3 \\ 6 & 8 & 7 & \alpha\end{array}\right]$ નો નિશ્ચાયક (rank) $3$ હોય,તો $\alpha$ ની કિંમત શોધો.

જો $\Delta(x) = \begin{vmatrix} x-2 & (x-1)^2 & x^3 \\ x-1 & x^2 & (x+1)^3 \\ x & (x+1)^2 & (x+2)^3 \end{vmatrix}$ હોય, તો $\Delta(x)$ માં $x$ નો સહગુણક શોધો.

શ્રેણિક $A = \begin{bmatrix} 2 & 3 & 1 & 4 \\ 0 & 1 & 2 & -1 \\ 0 & -2 & -4 & 2 \end{bmatrix}$ નો નિશ્ચાયક (rank) શોધો.

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જો $f(x) = \left| \begin{array}{ccc} \sin(x + \alpha) & \sin(x + \beta) & \sin(x + \gamma) \\ \cos(x + \alpha) & \cos(x + \beta) & \cos(x + \gamma) \\ \sin(\alpha + \beta) & \sin(\beta + \gamma) & \sin(\gamma + \alpha) \end{array} \right|$ અને $f(10) = 10$ હોય,તો $f(\pi)$ ની કિંમત શોધો.

જો સદિશો $\vec{\alpha}=\hat{i}+a \hat{j}+a^{2} \hat{k}$, $\vec{\beta}=\hat{i}+b \hat{j}+b^{2} \hat{k}$, અને $\vec{\gamma}=\hat{i}+c \hat{j}+c^{2} \hat{k}$ એ ત્રણ અસમતલીય સદિશો હોય અને $\left|\begin{array}{lll}a & a^{2} & 1+a^{3} \\ b & b^{2} & 1+b^{3} \\ c & c^{2} & 1+c^{3}\end{array}\right|=0$ હોય, તો $abc$ ની કિંમત શોધો.

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