NCERT Solutions for Class 12 Maths Chapter 4 Determinants Exercise 4.2

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CBSE CLASS XII Related Questions

1.
For what values of x,\(\begin{bmatrix} 1 & 2 & 1 \end{bmatrix}\)\(\begin{bmatrix} 1 & 2 & 0\\ 2 & 0 & 1 \\1&0&2 \end{bmatrix}\)\(\begin{bmatrix} 0 \\2\\x\end{bmatrix}\)=O?

      2.
      By using the properties of definite integrals, evaluate the integral: \(∫_0^π log(1+cosx)dx\)

          3.
          Find the following integral: \(\int (ax^2+bx+c)dx\)

              4.
              If (i) A=\(\begin{bmatrix} \cos\alpha & \sin\alpha\\ -\sin\alpha & \cos\alpha \end{bmatrix}\),then verify that A'A=I
              (ii) A= \(\begin{bmatrix} \sin\alpha & \cos\alpha\\ -\cos \alpha & \sin\alpha \end{bmatrix}\),then verify that A'A=I

                  5.
                  Let f: R→R be defined as f(x) = 3x. Choose the correct answer.

                    • f is one-one onto
                    • f is many-one onto
                    • f is one-one but not onto
                    • f is neither one-one nor onto

                    6.

                    Solve system of linear equations, using matrix method.
                     x-y+2z=7
                     3x+4y-5z=-5
                     2x-y+3z=12

                        CBSE CLASS XII Previous Year Papers

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