MCQ in English Answers for CBSE Maths 12 Science Matrices to enable students to get Answers in a narrative video format for the specific question.

Expert Teacher provides MCQ Answers for CBSE Maths 12 Science Matrices through Video Answers in English language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Matrices not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

** Question:**

** Find the transpose of the matrix: . **

** Answer Video in** **English****:**

You can select video Answers from other languages also. Please check Answers in ( Hindi )

**Question 1** : Matrices A and B will be inverse of each other only if : (View Answer Video)

**Question 2** : Find the value of y, from the equation: . (View Answer Video)

**Question 3** : Find the value of x from the equation: . (View Answer Video)

**Question 4** : Let Find A + B. (View Answer Video)

**Question 5** : Find the transpose of the matrix: . (View Answer Video)

**Question 1** : Evaluate the determinant: . (View Answer Video)

**Question 2** : If x, y, z are non-zero real numbers, then the inverse of matrix is, (View Answer Video)

**Question 3** : Find the equation of the line joining (3, 1) and (9, 3) using determinants. (View Answer Video)

**Question 4** : Transpose of a column matrix is, (View Answer Video)

**Question 5** : Which of the following is correct? (View Answer Video)

**Question 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)

**Question 1** : The total cost C(x) (in Rs) associated with the production of 'x' units of an item is given by :

C (x)=0.005x^{3}-0.02x^{2}+30x+5000.

Find the marginal cost when 3 units are produced, where by marginal cost we mean the instantaneous rate of change of total cost at any level of output. (View Answer Video)

**Question 2** : If the radius of a sphere is measured as 9 m with an error of 0.03 m, then find the approximate error in calculating its surface area. (View Answer Video)

**Question 3** : For all real values of x the minimum value of. (View Answer Video)

**Question 4** : Find the approximate change in the surface area of a cube of side x meters caused by decreasing the side by 1%. (View Answer Video)

**Question 5** : Find the approximate value of f(5.001) where. (View Answer Video)