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

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

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

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**Question 1** : 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 2** : Let be defined as f(x) = 3x. Choose the correct answer. (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** : The function, f(x) = 2x + 1 is, (View Answer Video)

**Question 5** : If the mapping f and g are given by f = {(1, 2), (3, 5), (4, 1)} and g = {(2, 3), (5, 1), (1, 3)}, Find . (View Answer Video)

**Question 1** : If x and y are connected parametrically by the equation , without eliminating the parameter, find . (View Answer Video)

**Question 2** : Differentiate w.r.t.x the function , for some fixed a > 0 and x > 0. (View Answer Video)

**Question 3** : Find the second order derivative of the function . (View Answer Video)

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

**Question 5** : Find for the function . (View Answer Video)

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

**Question 2** : Find the general solution of the following differential equation :

(View Answer Video)

**Question 3** : If m and n are the order and degree, respectively of the differential equation then write value of m+n. (View Answer Video)

**Question 4** : Determine degree of (View Answer Video)

**Question 5** : Obtain the differential equation of all the circles of radius r. (View Answer Video)

**Question 1** : Evaluate , if 2P(A)=P(B)= and =. (View Answer Video)

**Question 2** : A speaks truth in 60% of the cases, while B in 90% of cases. In what percent of cases are they likely to contradict each other in stating the same fact? In the cases of contradiction do you think, the statement B will carry more weight as he speaks truth in more number of cases than A? (View Answer Video)

**Question 3** : A girl throws a die. If she gets a 5 or 6, she tosses a coin three times and notes the number of heads. If she gets 1, 2, 3 or 4, she tosses a coin two times and notes the number of heads obtained. If she obtained exactly two heads, what is the probability that she threw 1, 2, 3, or 4 with the die? (View Answer Video)

**Question 4** : Out of a group of 30 honest people, 20 always speak the truth. Two persons are selected at random from the group. Find the probability distribution of the number of selected persons who speak the truth. Also find the mean of the distribution. What values are described in this question? (View Answer Video)

**Question 5** : The probabilities of two students A and B coming to the school in time are and respectively. Assuming that the events ' A coming in time ' and

' B coming in time ' are independent. Find the probability of only one. Write of them come in time atleast one advantage of coming to school in time. (View Answer Video)