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
Medium$(102, -4)$,$(105, -2)$ અને $(103, -3)$ બિંદુઓ દ્વારા બનતા ત્રિકોણનું ક્ષેત્રફળ શોધો:
- A$1$
- B$2$
- C$0.5$
- D$0.25$
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$\left|\begin{array}{lll}24 & 25 & 26 \\ 25 & 26 & 27 \\ 26 & 27 & 27\end{array}\right|$ ની કિંમત શોધો.
જો $\Delta=\left|\begin{array}{lll}1 & a & a^2 \\ 1 & b & b^2 \\ 1 & c & c^2\end{array}\right|=K(a-b)(b-c)(c-a)$,હોય તો $K=$
જો શ્રેણિક $A = \begin{bmatrix} 0 & a & b \\ -a & 0 & \beta \\ -b & \alpha & 0 \end{bmatrix}$ નો નિશ્ચાયક તમામ $a, b$ માટે શૂન્ય હોય,તો $\alpha + \beta =$
જો શ્રેણિક $A = \begin{bmatrix} 1 & 2 & 3 \\ 1 & 1 & 5 \\ 2 & 4 & 7 \end{bmatrix}$ હોય,તો $a_{31} A_{31} + a_{32} A_{32} + a_{33} A_{33}$ ની કિંમત શોધો.
$(2,7), (1,1), (10,8)$ શિરોબિંદુઓ ધરાવતા ત્રિકોણનું ક્ષેત્રફળ શોધો.
Medium
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