ExamBro
ExamBro
enEnglishhiहिन्दीguગુજરાતી
JEE Mains · Maths · STD 12 - 3 and 4 . metrices and determinant

જો \(\alpha\) એ સમીકરણ \(x^{2}+x+1=0\) ના બીજ છે અને શ્રેણિક \(A=\frac{1}{\sqrt{3}}\left[\begin{array}{ccc}{1} & {1} & {1} \\ {1} & {\alpha} & {\alpha^{2}} \\ {1} & {\alpha^{2}} & {\alpha^{4}}\end{array}\right],\) આપેલ હોય તો શ્રેણિક \(\mathrm{A}^{31}\) મેળવો.

  1. A \(A^3\)
  2. B \(A\)
  3. C \(A^2\)
  4. D \(I_3\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(A^3\)

Step-by-step Solution

Detailed explanation

\(x^{2}+x+1=0\) \(\alpha=\omega\) \(\alpha^{2}=\omega^{2}\) \(A=\frac{1}{\sqrt{3}}\left[\begin{array}{ccc}{1} & {1} & {1} \\ {1} & {\omega} & {\omega^{2}} \\ {1} & {\omega^{2}} & {\omega}\end{array}\right]\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app