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

Expert Teacher provides MCQ Relations and Functions Solutions for CBSE Maths 12 Science through Video Solutions 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 Solution in a narrative video format.

** Question:**

** Let defined as f(x) = x be an identity function. Then, **

** Solution Video in** **English****:**

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

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

**Question 2** : A function defined as is, (View Answer Video)

**Question 3** : Let A = {1, 2, 3, 4} and let R = {(2, 2), (3, 3), (4, 4), (1, 2)} be a relation on A. Then, R is, (View Answer Video)

**Question 4** : Let R be the relation on the set N given by R ={(a, b): a = b - 2, b > 6}. Choose the correct answer. (View Answer Video)

**Question 5** : Let * be any binary operation on the set R defined by a * b = a + b – ab, then the binary operation * is, (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** : 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** : A balloon, which always remains spherical has a variable radius. Find the rate at which its volume is increasing with the radius when the later is 10 cm. (View Answer Video)

**Question 5** : What is the maximum value of the function sin x+ cos x? (View Answer Video)

**Question 1** : Using the fact that and the differentiation, obtain the sum formula for cosines. (View Answer Video)

**Question 2** : Differentiate the function with respect to x. (View Answer Video)

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

**Question 4** : If and , find . (View Answer Video)

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

**Question 1** : Evaluate : (View Answer Video)

**Question 2** : Find the integral of the function . (View Answer Video)

**Question 3** : Evaluate : . (View Answer Video)

**Question 4** : Find:

(View Answer Video)

**Question 5** : Find : . (View Answer Video)