Ex 4.1, 5 - Chapter 4 Class 12 Determinants - Part 2

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  1. Chapter 4 Class 12 Determinants (Term 1)
  2. Serial order wise

Transcript

Ex 4.1, 5 Evaluate the determinant (ii) |■8(3&−4&5@1&1&−2@2&3&1)| ∆ = |■8(3&−4&5@1&1&−2@2&3&1)| = 3 |■8(1&−2@3&1)| – (– 4)|■8(1&−2@2&1)| + 5 |■8(1&1@2&3)| = 3(1(1) –3(−2)) + 4 (1(1) –(2)(−2)) + 5 (1 (3) –2 (1)) = 3 (1 + 6) + 4 (1 + 4) + 5 (3 – 2) = 3(7) + 4 (5) + 5(1) = 21 + 20 + 5 = 46

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.