Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Ex 4.1, 5 (ii) - Chapter 4 Class 12 Determinants
Last updated at June 11, 2023 by Teachoo
Chapter 4 Class 12 Determinants
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
