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

Expert Teacher provides CBSE Relations and Functions Maths 12 Science Solutions for MCQ 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 * be the binary operation on N given by a * b = LCM of a and b. Find 5 * 7. **

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

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

**Question 1** : If f(x) = |x| and g(x) = | 5x – 2 |. Then, fog = _____. (View Answer Video)

**Question 2** : The number of binary operations which can be defined on the set is, (View Answer Video)

**Question 3** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 20 * 16. (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** : A function defined as is, (View Answer Video)

**Question 1** : Find: . (View Answer Video)

**Question 2** : (View Answer Video)

**Question 3** : Find the integral of the function . (View Answer Video)

**Question 4** : Evaluate : (View Answer Video)

**Question 5** : Write the value of :. (View Answer Video)

**Question 1** : Which of the following functions are strictly decreasing on (View Answer Video)

**Question 2** : The slope of the tangent to the curve:

at the point (2, -1) is: (View Answer Video)

**Question 3** : The total cost C(x) (in Rs) associated with the production of 'x' units of an item is given by :

C (x)=0.005x^{3}-0.02x^{2}+30x+5000.

Find the marginal cost when 3 units are produced, where by marginal cost we mean the instantaneous rate of change of total cost at any level of output. (View Answer Video)

**Question 4** : 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 5** : On which of the following intervals in the function strictly decreasing? (View Answer Video)

**Question 1** : Find the value of x from the equation: . (View Answer Video)

**Question 2** : Given, , find the value of y. (View Answer Video)

**Question 3** : Find the value of X, if and . (View Answer Video)

**Question 4** : Compute: . (View Answer Video)

**Question 5** : Find the value of x from the equation: . (View Answer Video)