Check sibling questions

Ex 4.6, 8 - Solve using matrix method 2x - y = -2, 3x+4y=3 - Find solution of equations- Equations given

Ex 4.6, 8 - Chapter 4 Class 12 Determinants - Part 2
Ex 4.6, 8 - Chapter 4 Class 12 Determinants - Part 3
Ex 4.6, 8 - Chapter 4 Class 12 Determinants - Part 4

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Transcript

Step 2 Calculate |A| |A| = 2 1 3 4 = 2(4) ( 1)(3) = 8 + 3 = 11 |A| 0 Thus, System of equation is consistent & has a unique solution Now, AX = B X = A-1 B Step 3 Calculate X = A-1 B A-1 = 1 |A| adj (A) A = 2 1 3 4 adj A = 2 1 3 4 = 4 1 3 2 Now, A-1 = 1 |A| adj A A-1 = 1 11 4 1 3 2 Thus, X = A-1 B = 1 11 4 1 3 2 2 3 = 1 11 4 2 +1(3) 3 2 +2(3) = 1 11 8+3 6+6 = 1 11 5 12 = 5 11 12 11 Hence, x = & y =

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.