NCERT Solutions for Class 12 Maths Chapter 4 Determinants Exercise 4.5

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Jasmine Grover

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NCERT Solutions for Class 12 Maths Chapter 4 Determinants Exercise 4.5 is provided in this article with step by step explanation. Chapter 4 Exercise 4.5 has questions covering concepts of determinants such as how to find the inverse of a matrix using adjoint. The questions make use of many theorems to deal with the adjoint and Inverse of a Matrix.

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CBSE CLASS XII Related Questions

  • 1.

    Solve the differential equation \( (x+y)\,dy + (x-y)\,dx = 0 \), given that \( y(1) = 1 \).


      • 2.

        The motion of a particle is described as \( S = 2t^{3} - 6t^{2} + 8 \). Its velocity \( \frac{dS}{dt} \), when the acceleration \( \frac{d^{2}S}{dt^{2}} \) vanishes is :

          • \( -6 \) unit/sec
          • \( 0 \) unit/sec
          • \( 18 \) unit/sec
          • \( 6 \) unit/sec

        • 3.

          If \(y = \sqrt{\log \left\{ \sin \left( \dfrac{x^2}{3} + 1 \right) \right\}}\), then show that

          \[ \frac{dy}{dx} = \frac{x \cot \left( \dfrac{x^2}{3} + 1 \right)}{3y}. \]


            • 4.

              Find the sum of maximum and minimum values of \(f(x) = \sin x\,(1 + \cos x)\) in the interval \([0, \pi]\).


                • 5.

                  Differential of \( \log \sin x \) with respect to \( \sqrt{\cos x} \) is :

                    • \( -2\sqrt{\cos x}\cdot\cot x\cdot\operatorname{cosec} x \)
                    • \( \sqrt{\cos x}\cdot\cot x\cdot\operatorname{cosec} x \)
                    • \( \frac{2\sqrt{\cos x}}{\sin x} \)
                    • \( \frac{1}{\sin x\sqrt{\cos x}} \)

                  • 6.

                    The value of \( \left[ \tan^{-1}(-1) + \cos^{-1}\left(-\frac{1}{2}\right) + \sin^{-1}\left(\frac{1}{2}\right) \right] \) is :

                      • \( \frac{7\pi}{12} \)
                      • \( \frac{5\pi}{12} \)
                      • \( -\frac{5\pi}{12} \)
                      • \( \frac{\pi}{3} \)
                    CBSE CLASS XII Previous Year Papers

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