$\left| {\begin{array}{*{20}{c}}{1 + x}&1&1\\1&{1 + y}&1\\1&1&{1 + z}\end{array}} \right| = $

  • A
    $xyz\left( {1 + \frac{1}{x} + \frac{1}{y} + \frac{1}{z}} \right)$
  • B
    $xyz$
  • C
    $1 + \frac{1}{x} + \frac{1}{y} + \frac{1}{z}$
  • D
    $\frac{1}{x} + \frac{1}{y} + \frac{1}{z}$

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Similar Questions

જો $a, b, c$ વાસ્તવિક સંખ્યાઓ હોય,તો નિશ્ચાયક $\left| {\begin{array}{*{20}{c}} {{a^2} + 1}&{ab}&{ac}\\{ab}&{{b^2} + 1}&{bc}\\{ac}&{bc}&{{c^2} + 1}\end{array}}\right| = 1$ થાય જો

જો $\left| {\begin{array}{*{20}{c}}{{x^2} + x}&{x + 1}&{x - 2}\\ {2{x^2} + 3x - 1}&{3x}&{3x - 3}\\ {{x^2} + 2x + 3}&{2x - 1}&{2x - 1}\end{array}} \right| = Ax - 12$ હોય,તો $A$ ની કિંમત શોધો.

$\left|\begin{array}{ccc}x+2 & x+3 & x+5 \\ x+4 & x+6 & x+9 \\ x+8 & x+11 & x+15\end{array}\right|$ ની કિંમત શોધો.

નિશ્ચાયકનો ઉપયોગ કરીને $(1, 2)$ અને $(3, 6)$ ને જોડતી રેખાનું સમીકરણ શોધો.

નિશ્ચાયકનું મૂલ્ય શોધો: $\left|\begin{array}{rrr}3 & -1 & -2 \\ 0 & 0 & -1 \\ 3 & -5 & 0\end{array}\right|$

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