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

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

** The function, f(x) = 2x + 1 is, **

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

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**Question 1** : Consider given by f(x) = 4x + 3. Find the inverse of f. (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** : 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** : A function is bijective if and only if, (View Answer Video)

**Question 5** : * 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 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)

**Question 1** : Differentiate w.r.t.x the function , for some constant a and b. (View Answer Video)

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

**Question 3** : Using the fact that and the differentiation, obtain the sum formula for cosines. (View Answer Video)

**Question 4** : Find for the function . (View Answer Video)

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

**Question 1** : 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 2** : The normal at the point (1, 1) on the curve is; (View Answer Video)

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

**Question 4** : If the radius of a sphere is measured as 9 m with an error of 0.03 m, then find the approximate error in calculating its surface area. (View Answer Video)

**Question 5** : Ifthen the approximate value of f(3.02) is : (View Answer Video)