Question 3. If , then show that | 2A | = 4 | A | Chapter 4: Determinants Maths Class 12 NCERT Textbook Solutions which is also known as NCERT Solutions helps the students to increase the speed of solving problems and improve master problem-solving skills in Question 3. If , then show that | 2A | = 4 | A | chapter 4. The NCERT Solutions for class 12 Maths chapter 4 Chapter 4: Determinants is very importent to provide a strong foundation of all the subjects. Question 3. If , then show that | 2A | = 4 | A | is the part of study NCERT Solutions for class 12 Maths
Question 3. If , then show that | 2A | = 4 | A |
Answer:
LHS
|2A| =
Use formula
=2(4) – 4(8)
= 8 – 32
= - 24
R.H.S
4|A| = 4 = 4(1 x 2 - 2 x 4 )
= 4(2 – 8)
= 4(-6)
= - 24
L.H.S = R.H.S
Hence proved
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