Subscribe to our Youtube Channel - https://you.tube/teachoo
Ex 4.1, 8 - Chapter 4 Class 12 Determinants
Last updated at May 29, 2018 by Teachoo
Transcript
Ex 4.1, 8 If x 2 18 x = 6 2 18 6 , then x is equal to (A) 6 (B) 6 (C) 6 (D) 0 Given x 2 18 x = 6 2 18 6 Putting values x2 36 = 0 x2 62 = 0 (x 6) (x + 6) = 0 So , x = 6, x = 6 Hence value of x = 6 . Correct answer is B
Finding determinant of a 2x2 matrix
Chapter 4 Class 12 Determinants
Concept wise
- Finding determinant of a 2x2 matrix
- Evalute determinant of a 3x3 matrix
- Area of triangle
- Equation of line using determinant
- Finding Minors and cofactors
- Evaluating determinant using minor and co-factor
- Find adjoint of a matrix
- Finding Inverse of a matrix
- Inverse of two matrices and verifying properties
- Finding inverse when Equation of matrice given
- Checking consistency of equations
- Find solution of equations- Equations given
- Find solution of equations- Statement given
- Verifying properties of a determinant
- Two rows or columns same
- Whole row/column zero
- Whole row/column one
- Making whole row/column one and simplifying
- Proving Determinant 1 = Determinant 2
- Solving by simplifying det.
- Using Property 5 (Determinant as sum of two or more determinants)
About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.