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

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

** A function is bijective if and only if, **

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

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

**Question 1** : Number of binary operations on the set { a, b} are: (View Answer Video)

**Question 2** : Functions are defined respectively, by , find . (View Answer Video)

**Question 3** : Functions are defined respectively, by , find . (View Answer Video)

**Question 4** : 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 5** : The law a + b = b + a is called ______. (View Answer Video)

**Question 1** : Compute the magnitude of the following vectors:

(View Answer Video)

**Question 2** : If a line has direction ratios 2, -1, -2, then what are its direction cosines? (View Answer Video)

**Question 3** : Write the value of for which the vectors and are parallel vectors. (View Answer Video)

**Question 4** : Find the scalar quantities from the following:

(i) 10 kg (ii) 2 m north-west (iii)

(iv) 40 W (v) (vi) (View Answer Video)

**Question 5** : If and denote the position vectors of points A and B respectively and C is a point on AB such that AC = 2 CB, then write the position vector of C. (View Answer Video)

**Question 1** : Solve the differential equation (View Answer Video)

**Question 2** : Write the degree of the differential equation : (View Answer Video)

**Question 3** : Solve the following differential equation :

(View Answer Video)

**Question 4** : Find the particular solution of the differential equation given that When x =1. (View Answer Video)

**Question 5** : Form the differential equation of equation y = a cos 2x + b sin 2x, where a and b are constant. (View Answer Video)

**Question 1** : Differentiate w.r.t.x the function . (View Answer Video)

**Question 2** : Differentiate the function w.r.t.x . (View Answer Video)

**Question 3** : Differentiate w.r.t.x the function . (View Answer Video)

**Question 4** : If x and y are connected parametrically by the equation , without eliminating the parameter, find . (View Answer Video)

**Question 5** : Differentiate the function w.r.t.x . (View Answer Video)