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 ${\Delta _1} = \left| {\begin{array}{*{20}{c}}1&0\\a&b\end{array}} \right|$ અને ${\Delta _2} = \left| {\begin{array}{*{20}{c}}1&0\\c&d\end{array}} \right|$ હોય,તો ${\Delta _2}{\Delta _1}$ ની કિંમત શોધો.
- A$ac$
- B$bd$
- C$(b - a)(d - c)$
- Dઆમાંથી કોઈ નહીં
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નિશ્ચાયક $\left| \begin{array}{ccc} 10! & 11! & 12! \\ 11! & 12! & 13! \\ 12! & 13! & 14! \end{array} \right|$ નું મૂલ્ય શું છે?
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View Solution$\left| \begin{array}{ccc} 5^2 & 5^3 & 5^4 \\ 5^3 & 5^4 & 5^5 \\ 5^4 & 5^5 & 5^7 \end{array} \right|$ નું મૂલ્ય શોધો.
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View Solutionસમીકરણ $\left| \begin{matrix} x & a & b \\ a & x & a \\ b & b & x \end{matrix} \right| = 0$ ના ઉકેલ(ઓ) છે:
$\left|\begin{array}{lll}(a+1)(a+2) & a+2 & 1 \\ (a+2)(a+3) & a+3 & 1 \\ (a+3)(a+4) & a+4 & 1\end{array}\right|$ નું મૂલ્ય શોધો.
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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