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

यदि \(B\) एक ऐसा \(3 \times 3\) आव्यूह है कि \(B ^{2}=0\) है, तो det. \(\left[( I + B )^{50}-50 B \right]\) बराबर है

  1. A \(1\)
  2. B \(2\)
  3. C \(3\)
  4. D \(50\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(1\)

Step-by-step Solution

Detailed explanation

det \(\left[ {{{\left( {I + B} \right)}^{50}} - 50B} \right]\) \(=\) det \([ {\,^{50}}{C_0}I + {\,^{50}}{C_1}B + {\,^{50}}{C_2}{B^2} + {\,^{50}}{C_3}{B^3} + ... +\) \( {\,^{50}}{C_{50}}{B^{50}}{B^{50}} - 50B]\) {All terms having \({B^n},2 \le n \le 50\) will be zero because…
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