Question 2. Evaluate the determinants in Exercises 1 and 2. Chapter 4: Determinants Maths Class 12 solutions are developed for assisting understudies with working on their score and increase knowledge of the subjects. Question 2. Evaluate the determinants in Exercises 1 and 2. is solved by our expert teachers. You can get ncert solutions and notes for class 12 chapter 4 absolutely free. NCERT Solutions for class 12 Maths Chapter 4: Determinants is very essencial for getting good marks in CBSE Board examinations
Question 2. Evaluate the determinants in Exercises 1 and 2.
Answer
Use formula
= (cos θ)(cos θ) − (−sin θ)(sin θ) = cos2 θ+ sin2 θ = 1
(ii)
Use formula
= (x2 − x + 1)(x + 1) − (x − 1)(x + 1)
= x3 − x2 + x + x2 − x + 1 − (x2 − 1)
= x3 + 1 − x2 + 1
= x3 − x2 + 2
Copyright @ ncerthelp.com A free educational website for CBSE, ICSE and UP board.
