Class 12Mathematics3 and 4 .Determinants and MatricesExpansion of determinants, Solution of equation in the form of determinants and area of triangle and Equation of Line
Easyજો $\left|\begin{array}{lll}1 & 2 & 3 \\ 2 & 3 & 4 \\ 3 & 4 & 5\end{array}\right|=2016 k$ હોય,તો $k=$ . . . . . .
- A$0$
- B$1$
- C$2016$
- D$1/2016$
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ઉગમબિંદુ $(0, 0)$ ને બિંદુ $(-4, 5)$ સાથે જોડતી રેખાનું સમીકરણ શું છે?
Easy
View Solutionજો $\left| \begin{array}{ccc} \cos 2x & \sin^2 x & \cos 4x \\ \sin^2 x & \cos 2x & \cos^2 x \\ \cos 4x & \cos^2 x & \cos 2x \end{array} \right| = a_0 + a_1 \sin x + a_2 \sin^2 x + \dots$ હોય,તો $a_0$ ની કિંમત શોધો.
જો $\left|\begin{array}{ll}3 & x \\ x & 1\end{array}\right|=\left|\begin{array}{ll}3 & 2 \\ 4 & 1\end{array}\right|$ હોય,તો $x$ ની કિંમત . . . . . . છે.
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:
જો $x = a + 2b$ એ ઘન સમીકરણ $(a, b \in R)$ $f(x) = \begin{vmatrix} a - x & b & b \\ b & a - x & b \\ b & b & a - x \end{vmatrix} = 0$ નું સમાધાન કરે છે,તો તેના બાકીના બે બીજ શું છે?
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