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

Expert Teacher provides CBSE Relations and Functions Maths 12 Science Answers for MCQ 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 Relations and Functions 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:**

** Let * be the binary operation on N given by a * b = LCM of a and b. Find the identity of * in N. **

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

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

**Question 1** : * is a binary operation on Z such that: a * b = a + b + ab. The solution of (3* 4) *x = – 1 is,

(View Answer Video)

**Question 2** : If f is the greatest integer function and g is the modulus function . Write the value of g o f(-1/3) – f o g ( -1/3 ) . (View Answer Video)

**Question 3** : If f(x) = ax + b and g(x) = cx + d, then f[g(x)] – g[f(x)] is equivalent to, (View Answer Video)

**Question 4** : Let defined as f(x) = x be an identity function. Then, (View Answer Video)

**Question 5** : 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 1** : Using the method of integration, find the area of the region bounded by the lines 3x - 2y + 1 = 0, 2x + 3y -21 = 0 and x - 5y + 9 = 0. (View Answer Video)

**Question 2** : Using the method of integration, find the area of the triangular region whose vertices are (2, -2), (4, 3) and (1, 2). (View Answer Video)

**Question 3** : A farmer has a field of shape bounded by and x = 3, he wants to divide this into his two sons equally by a straight line x = c. Can you find c? What value, you find in the person ? (View Answer Video)

**Question 4** : Using integration, find the area of the triangle ABC, where A is (2,3), B is (4,7) and C is (6,2). (View Answer Video)

**Question 5** : Find the area bounded by curves . (View Answer Video)

**Question 1** : Find the area of the triangle with vertices at the points (-2, -3), (3, 2), (-1, -8). (View Answer Video)

**Question 2** : Let A be a square matrix of order , then |kA| is equal to, (View Answer Video)

**Question 3** : Let A be a non-singular square matrix of order 3 * 3. Then | adj A | is equal to: (View Answer Video)

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

**Question 5** : If find |A|. (View Answer Video)

**Question 1** : Evaluate :

(View Answer Video)

**Question 2** : is equal to :

(View Answer Video)

**Question 3** : then find the value of x. (View Answer Video)

**Question 4** : is equal to : (View Answer Video)

**Question 5** : is equal to :

(View Answer Video)