Question 1.
Find the values of the determinants.
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 2 word image 17510 2](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-2.png)
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 3 word image 17510 3](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-3.png)
Question 2.
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 4 word image 17510 5](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-5.png)
Question 3.
Solution:
Comparing with x + iy, we get x = 11, y = 52
Question 4.
Find the minors and cofactors of elements of the determinant D=
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 7 word image 17510 9](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-9.png)
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 8 word image 17510 10](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-10.png)
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 9 word image 17510 11](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-11.png)
![Maharashtra Board Class 11 Maths Part 1 Chapter 4 Determinants and Matrices Ex 4.1 Solution 10 word image 17510 12](https://mhboardsolutions.xyz/wp-content/uploads/2022/02/word-image-17510-12.png)
Question 5.
Solution:
= 2(0 – 20) + 3(- 42 – 4) + 5(30 – 0) = 2(-20) + 3(- 46) + 5(30)
= 2(0 – 20) + 3(- 42 – 4) + 5(30 – 0) = 2(-20) + 3(- 46) + 5(30)
= -40-138+ 150 = -28
Question 6.