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

Expert Teacher provides MCQ Determinant Answers for CBSE Maths 12 Science 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 Determinant 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:**

** Using the properties of determinants, evaluate . **

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

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

**Question 1** : Which of the following is correct? (View Answer Video)

**Question 2** : If A is a symmetric matrix, then ? (View Answer Video)

**Question 3** : Find the adjoint of the matrix . (View Answer Video)

**Question 4** : If=andis Cofactor of , then the value of is given by (View Answer Video)

**Question 5** : If x, y, z are non-zero real numbers, then the inverse of matrix is, (View Answer Video)

**Question 1** : Evaluate :

(View Answer Video)

**Question 2** : Write the principal value of (View Answer Video)

**Question 3** : Write the value of the following:

(View Answer Video)

**Question 4** : What is principal value of (View Answer Video)

**Question 5** : is equal to : (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** : The maximum value of is, (View Answer Video)

**Question 3** : The radius of an air bubble is increasing at the rate of . At what rate is the volume of the bubble increasing when its radius is 1 cm? (View Answer Video)

**Question 4** : For the curve, y= if x increases at the rate of 2 units/sec, then how fast is the slope of curve changing when x=3? (View Answer Video)

**Question 5** : On which of the following intervals in the function strictly decreasing? (View Answer Video)

**Question 1** : Let A = {1, 2, 3}. Then, number of relations containing (1, 2) and (1, 3) which are reflexive and symmetric but not transitive is, (View Answer Video)

**Question 2** : Letbe defined as f(x) = 3x. (View Answer Video)

**Question 3** : Let R be the relation on the set {1, 2, 3, 4} given by R = {(1, 2), (2, 2), (1, 1), (4, 4), (1, 3), (3,3), (3,2)}. then R is, (View Answer Video)

**Question 4** : Number of binary operations on the set { a, b} are: (View Answer Video)

**Question 5** : Functions are defined respectively, by , find . (View Answer Video)