નિશ્ચાયક $\left| \begin{array}{ccc} 1 & 1 & 1 \\ 1 & 2 & 3 \\ 1 & 3 & 6 \end{array} \right|$ એ નીચેનામાંથી કોના બરાબર નથી?
- A$\left| \begin{array}{ccc} 2 & 1 & 1 \\ 2 & 2 & 3 \\ 2 & 3 & 6 \end{array} \right|$
- B$\left| \begin{array}{ccc} 2 & 1 & 1 \\ 3 & 2 & 3 \\ 4 & 3 & 6 \end{array} \right|$
- C$\left| \begin{array}{ccc} 1 & 2 & 1 \\ 1 & 5 & 3 \\ 1 & 9 & 6 \end{array} \right|$
- D$\left| \begin{array}{ccc} 3 & 1 & 1 \\ 6 & 2 & 3 \\ 10 & 3 & 6 \end{array} \right|$
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જો ${a_1}, {a_2}, {a_3}, \dots, {a_n}, \dots$ એ $G.P.$ માં હોય,તો નિશ્ચાયક $\left| \begin{array}{ccc} \log {a_n} & \log {a_{n+1}} & \log {a_{n+2}} \\ \log {a_{n+3}} & \log {a_{n+4}} & \log {a_{n+5}} \\ \log {a_{n+6}} & \log {a_{n+7}} & \log {a_{n+8}} \end{array} \right|$ નું મૂલ્ય શું છે?
MediumAIEEE 2005
View Solutionજો $x, y, z$ ભિન્ન હોય અને $\Delta=\left|\begin{array}{lll}x & x^{2} & 1+x^{3} \\ y & y^{2} & 1+y^{3} \\ z & z^{2} & 1+z^{3}\end{array}\right|=0,$ હોય,તો સાબિત કરો કે $1+x y z=0$.
Difficult
View Solutionજો $\theta \in \left(0, \frac{\pi}{2}\right)$ હોય,તો $\left|\begin{array}{ccc} (\sin \theta+\operatorname{cosec} \theta)^2 & (\sin \theta-\operatorname{cosec} \theta)^2 & 2020 \\ (\cos \theta+\sec \theta)^2 & (\cos \theta-\sec \theta)^2 & 2020 \\ (\tan \theta+\cot \theta)^2 & (\tan \theta-\cot \theta)^2 & 2020 \end{array}\right| = $
DifficultAP EAMCET 2020
View Solutionનિશ્ચાયકના ગુણધર્મોનો ઉપયોગ કરીને અને વિસ્તરણ કર્યા વગર સાબિત કરો કે:
$\left|\begin{array}{lll}a-b & b-c & c-a \\ b-c & c-a & a-b \\ c-a & a-b & b-c\end{array}\right|=0$
$\left|\begin{array}{lll}a-b & b-c & c-a \\ b-c & c-a & a-b \\ c-a & a-b & b-c\end{array}\right|=0$
Easy
View Solutionશૂન્યતર $a, b, c$ માટે,જો $\Delta = \begin{vmatrix} 1 + a & 1 & 1 \\ 1 & 1 + b & 1 \\ 1 & 1 & 1 + c \end{vmatrix} = 0$ હોય,તો $\frac{1}{a} + \frac{1}{b} + \frac{1}{c}$ ની કિંમત =
Difficult
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