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
Difficult$\left| {\begin{array}{ccc} bc & bc' + b'c & b'c' \\ ca & ca' + c'a & c'a' \\ ab & ab' + a'b & a'b' \end{array}} \right|$ ની કિંમત શોધો.
- A$(ab - a'b')(bc - b'c')(ca - c'a')$
- B$(ab + a'b')(bc + b'c')(ca + c'a')$
- C$(ab' - a'b)(bc' - b'c)(ca' - c'a)$
- D$(ab' + a'b)(bc' + b'c)(ca' + c'a)$
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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 $a x^{4}+b x^{3}+c x^{2}+d x+e = \left|\begin{array}{ccc}x^{3}+3 x & x-1 & x+3 \\ x+1 & -2 x & x-4 \\ x-3 & x+4 & 3 x\end{array}\right|$ હોય,તો $e$ ની કિંમત શોધો.
ધારો કે $A = \begin{bmatrix} 2 & 0 & 3 \\ 4 & 7 & 11 \\ 5 & 4 & 8 \end{bmatrix}$. તો
જો $\omega$ એ એકમનું ઘનમૂળ હોય,તો સમીકરણ $\left| \begin{array}{ccc} x+1 & \omega & \omega^2 \\ \omega & x+\omega^2 & 1 \\ \omega^2 & 1 & x+\omega \end{array} \right| = 0$ નું એક બીજ શું છે?
Easy
View Solutionધારો કે ${a_2},{a_3} \in R$ એવા છે કે જેથી $\left| {{a_2} - {a_3}} \right| = 6$ અને $f\left( x \right) = \left| \begin{array}{ccc} 1 & {a_3} & {a_2} \\ 1 & {a_3} & {2{a_2} - x} \\ 1 & {2{a_3} - x} & {a_2} \end{array} \right|, x \in R.$ તો $f(x)$ ની મહત્તમ કિંમત શોધો.
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