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

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

** Number of binary sets on the set is, **

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

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

**Question 1** : Functions are defined respectively, by , find . (View Answer Video)

**Question 2** : Let * be the binary operation on N given by a * b = LCM of a and b. Find the identity of * in N. (View Answer Video)

**Question 3** : 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 4** : 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 5** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 5 * 7. (View Answer Video)

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

**Question 2** : Evaluate the determinant: . (View Answer Video)

**Question 3** : If a, b, c are in AP, then determinant . (View Answer Video)

**Question 4** : Find the adjoint of the matrix . (View Answer Video)

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

**Question 1** : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

**Question 2** : Find two numbers whose sum is 24 and whose product is as large as possible. (View Answer Video)

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

**Question 4** : The normal at the point (1, 1) on the curve is; (View Answer Video)

**Question 5** : The line y = mx + 1 is a tangent to the curve if the value of m is: (View Answer Video)

**Question 1** : Find the position vector of c which divides the line segment joining A & B whose position vectors are and internally in the ratio

2 : 3. (View Answer Video)

**Question 2** : Find a unit vector parallel to the sum of vectors and (View Answer Video)

**Question 3** : Find the unit vector in the direction of if and (View Answer Video)

**Question 4** : Find the vector quantities :

(i) Work (ii) Force

(iii) Velocity (iv) Displacement. (View Answer Video)

**Question 5** : For given vectors,and find the unit vector in the direction of the vector a + b. (View Answer Video)