જો $A$ એ $3$ કક્ષાનો ચોરસ શ્રેણિક હોય,તો નીચેનામાંથી કયું વિધાન સત્ય છે? (જ્યાં $I$ એ એકમ શ્રેણિક છે)

  • A
    $det(-A) = -det(A)$
  • B
    $det(A) = 0$
  • C
    $det(A + I) = 1 + det(A)$
  • D
    $det(2A) = 2det(A)$

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Similar Questions

સાબિત કરો કે $\left|\begin{array}{ccc}a^{2} & b c & a c+c^{2} \\ a^{2}+a b & b^{2} & a c \\ a b & b^{2}+b c & c^{2}\end{array}\right|=4 a^{2} b^{2} c^{2}$

Difficult
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જો $\Delta = \begin{vmatrix} x+y+z^2 & x^2+y+z & x+y^2+z \\ z^2 & x^2 & y^2 \\ x+y & y+z & x+z \end{vmatrix}$,(જ્યાં $x \neq y \neq z$ અને $x, y, z \in \mathbb{R} - \{0\}$),તો $\Delta = $ . . . . . . .

જો $\Delta _1 = \left| \begin{matrix} b^5c^6(c^3 - b^3) & a^4c^6(a^3 - c^3) & a^4b^5(b^3 - a^3) \\ b^2c^3(b^6 - c^6) & ac^3(c^6 - a^6) & ab^2(a^6 - b^6) \\ b^2c^3(c^3 - b^3) & ac^3(a^3 - c^3) & ab^2(b^3 - a^3) \end{matrix} \right|$ અને $\Delta _2 = \left| \begin{matrix} a & b^2 & c^3 \\ a^4 & b^5 & c^6 \\ a^7 & b^8 & c^9 \end{matrix} \right|$ હોય,તો $\Delta _1 \Delta _2$ ની કિંમત શોધો.

Difficult
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નિશ્ચાયક $\left|\begin{array}{ccc}a^{2}+10 & a b & a c \\ a b & b^{2}+10 & b c \\ a c & b c & c^{2}+10\end{array}\right|$ એ

$\left|\begin{array}{ccc}a-b-c & 2a & 2a \\ 2b & b-c-a & 2b \\ 2c & 2c & c-a-b\end{array}\right|$ ની કિંમત શોધો.

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