NCERT Solutions for Class 12 Maths Chapter 4 Determinants Exercise 4.1

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Jasmine Grover

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Class 12 Maths NCERT Solutions Chapter 4 Determinants Exercise 4.1 is given in this article. Chapter 4 Determinants Exercise includes questions on determinant of a matrix, determinants of a matrix of order one, determinants of a matrix of order two, and determinants of a matrix of order 3 × 3.

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Class 12 Chapter 4 Determinants Topics:

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CBSE CLASS XII Related Questions

  • 1.

    The domain of \[ f(x)=\cos^{-1}(2x-5) \] is: 

      • \([-1, 1]\)
      • \([4, 6]\)
      • \([-7, -3]\)
      • \([2, 3]\)

    • 2.

      Sports car racing is a form of motorsport which uses sports car prototypes.The competition is held on special tracks designed in various shapes. 

      The equation of a sports car racing track is given as: \[ f(x)= \begin{cases} x^4-4x^2+4, & 0\leq x<3,\\ x^2+40, & x\geq 3 \end{cases} \] Based on this information:


        • 3.

          If \[ B(\operatorname{adj} B)= \begin{bmatrix} \frac{1}{3} & 0 & 0\\ 0 & \frac{1}{3} & 0\\ 0 & 0 & \frac{1}{3} \end{bmatrix}, \] then the value of \[ \det(B^{-1}) \] is: 

            • \(\frac{1}{3}\)
            • \(\frac{1}{9}\)
            • \(3\)
            • \(9\)

          • 4.

            Check whether the function \[ f(x)= \begin{cases} \dfrac{|x-3|}{2(x-3)}, & x<3,\\[6pt] \dfrac{x-6}{6}, & x\geq 3 \end{cases} \] is continuous at \(x=3\) or not. 


              • 5.
                Evaluate: \[ \cos\left[\sin^{-1}(-1)-\tan^{-1}(-\sqrt{3})\right]. \]


                  • 6.
                    The least value of \[ f(x)=e^{-x} \] in the interval \[ [0,3] \] is:

                      • \( e^{-3} \)
                      • \( -1 \)
                      • \( 1 \)
                      • \( -e^3 \)
                    CBSE CLASS XII Previous Year Papers

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