NCERT Solutions for Class 12 Maths Chapter 4 Determinants Exercise 4.5

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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.
    Evaluate : \[ \int_{-\frac{\pi}{6}}^{\frac{\pi}{3}}(\sin|x|+\cos|x|)\,dx \]


      • 2.
        Find the domain of \(p(x)=\sin^{-1}(1-2x^2)\). Hence, find the value of \(x\) for which \(p(x)=\frac{\pi}{6}\). Also, write the range of \(2p(x)+\frac{\pi}{2}\).


          • 3.

            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 one such track is given as 

            (i) Find \(f'(x)\) for \(0<x>3\). 
            (ii) Find \(f'(4)\). 
            (iii)(a) Test for continuity of \(f(x)\) at \(x=3\). 
            OR 
            (iii)(b) Test for differentiability of \(f(x)\) at \(x=3\). 
             


              • 4.
                If \[ P = \begin{bmatrix} 1 & -1 & 0 \\ 2 & 3 & 4 \\ 0 & 1 & 2 \end{bmatrix} \quad \text{and} \quad Q = \begin{bmatrix} 2 & 2 & -4 \\ -4 & 2 & -4 \\ 1 & -1 & 5 \end{bmatrix} \] find \( QP \) and hence solve the following system of equations using matrix method:
                \[ x - y = 3,\quad 2x + 3y + 4z = 13,\quad y + 2z = 7 \]


                  • 5.

                    The probability of hitting the target by a trained sniper is three times the probability of not hitting the target on a stormy day due to high wind speed. The sniper fired two shots on the target on a stormy day when wind speed was very high. Find the probability that 
                    (i) target is hit. 
                    (ii) at least one shot misses the target. 


                      • 6.
                        Find the sub–interval of \((0,\pi)\) in which the function \[ f(x)=\tan^{-1}(\sin x-\cos x) \] is increasing and decreasing.

                          CBSE CLASS XII Previous Year Papers

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