Example 5 - Find x for which |3 x x 1| = |3 2 4 1| - Examples

  1. Chapter 4 Class 12 Determinants
  2. Serial order wise
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Example 5 Find values of x for which 3﷮x﷮x﷮1﷯﷯ = 3﷮2﷮4﷮1﷯﷯ Given 3﷮x﷮x﷮1﷯﷯ = 3﷮2﷮4﷮1﷯﷯ Putting values 3 – x2 = – 5 – x2 = – 5 – 3 – x2 = – 8 x2 = 8 x = ± ﷮8﷯ = ± ﷮2 × 2 × 2﷯ = ± 2 ﷮2﷯ Hence value of x is ± 2 ﷮𝟐﷯

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