જો $60 \hat{i}+3 \hat{j}$,$40 \hat{i}-8 \hat{j}$ અને $a \hat{i}-52 \hat{j}$ સ્થાન સદિશો ધરાવતા બિંદુઓ સમરેખ હોય,તો $a$ ની કિંમત શોધો.

  • A
    $-40$
  • B
    $-20$
  • C
    $20$
  • D
    $40$

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Similar Questions

સમીકરણ $\left|\begin{array}{ccc}x+a & x & x \\ x & x+a & x \\ x & x & x+a\end{array}\right|=0$ ઉકેલો,જ્યાં $a \neq 0$.

જો $\operatorname{det}(A-\lambda I_2)=0$ ના ઉકેલો $4$ અને $8$ હોય, જ્યાં $A=\begin{bmatrix} 2 & 3 \\ x & y \end{bmatrix}$, તો:

$\left|\begin{array}{ccc}\frac{-bc}{a^2} & \frac{c}{a} & \frac{b}{a} \\ \frac{c}{b} & \frac{-ac}{b^2} & \frac{a}{b} \\ \frac{b}{c} & \frac{a}{c} & \frac{-ab}{c^2}\end{array}\right| = $

જો $a, b, c$ એ અનુક્રમે $A.P.$ ના $p^{th}, q^{th}, r^{th}$ પદો હોય,તો $\left| \begin{array}{ccc} a & p & 1 \\ b & q & 1 \\ c & r & 1 \end{array} \right| = $

જો $\left|\begin{array}{ccc}9 & 25 & 16 \\ 16 & 36 & 25 \\ 25 & 49 & 36\end{array}\right|=K$ હોય, તો $K, K+1$ એ કયા સમીકરણના બીજ છે?

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