Class 12Mathematics3-4. Matrices and DeterminantsExpansion of determinants, Solution of equation in the form of determinants and area of triangle and Equation of Line
Easyજો $\left| \begin{matrix} -x & 1 & 0 \\ 1 & -x & 1 \\ 0 & 1 & -x \end{matrix} \right| = 0$ હોય,તો $x$ ની કિંમત શોધો.
- A$0, \pm \sqrt{2}$
- B$0, \pm \sqrt{2}$
- C$0, \pm \sqrt{3}$
- D$\pm \sqrt{2}, \pm \sqrt{3}$
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Similar Questions
જો $\left|\begin{array}{ccc}x & 4 & 6 \\ 2 & 3 & -9 \\ 5 & 6 & 1\end{array}\right|+\left|\begin{array}{ccc}5 & 6 & 1 \\ 6 & 4 & 5 \\ 2 & 3 & -9\end{array}\right|=\left|\begin{array}{ccc}2 & 3 & -9 \\ 1-2 x & -8 & -11 \\ 5 & 6 & 1\end{array}\right|$ હોય,તો $x=$ . . . . . .
જો $a_i^2 + b_i^2 + c_i^2 = 1$ જ્યાં $i = 1, 2, 3$ અને $a_ia_j + b_ib_j + c_ic_j = 0$ જ્યાં $i \ne j$ અને $i, j = 1, 2, 3$ હોય,તો નિશ્ચાયક $\left| \begin{array}{ccc} a_1 & a_2 & a_3 \\ b_1 & b_2 & b_3 \\ c_1 & c_2 & c_3 \end{array} \right|$ ની કિંમત શું થાય?
Difficult
View Solution$\left|\begin{array}{lll}(a+1)(a+2) & a+2 & 1 \\ (a+2)(a+3) & a+3 & 1 \\ (a+3)(a+4) & a+4 & 1\end{array}\right|$ નું મૂલ્ય શોધો.
સાબિત કરો કે $\left|\begin{array}{ccc}b+c & a & a \\ b & c+a & b \\ c & c & a+b\end{array}\right|=4abc$
Medium
View Solutionજો $k = p + q + r$ હોય,તો $\left|\begin{array}{ccc} k+r & p & q \\ r & k+p & q \\ r & p & k+q \end{array}\right|$ નું મૂલ્ય કેટલું થાય?
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