NCERT Solutions for Class 12 Maths Chapter 4 Determinants — Exercise 4.1

ncert class 12 maths chapter 4 Determinants

Question 1:2 4 –5 –1

exercise 4.1 maths class 12 Chapter 4 Determinants

Question 2:(i) cos – sin sin cos q q q q (ii) 2 – 1 – 1 1 1 x x x x x + + +

cbse class 12 maths ncert solutions Chapter 4

Question 3:If A = 1 2 4 2
     , then show that | 2A | = 4 | A |

Class 12 maths solutions Determinants

Question 4:If A = 1 0 1 0 1 2 0 0 4
       , then show that | 3 A | = 27 | A |

ncert class 12 chemistry chapter 4 exercise solutions

Question 5:Evaluate the determinants (i) 3 –1 –2 0 0 –1 3 –5 0 (ii) 3 – 4 5 1 1 –2 2 3 1 (iii) 0 1 2 –1 0 –3 –2 3 0 (iv) 2 –1 –2 0 2 –1 3 –5 0

Determinants Class 12 ncert solutions

Question 6:If A = 1 1 –2 2 1 –3 5 4 –9
       , find | A |

Question 7:Find values of x, if (i) 2 4 2 4 5 1 6 x x = (ii) 2 3 3 4 5 2 5 x x =

Question 8:If 2 6 2 18 18 6 x x = , then x is equal to (A) 6 (B) ± 6 (C) – 6 (D) 0