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

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

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

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**Question 1** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 20 * 16. (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 equivalence relations containing (1, 2) is: (View Answer Video)

**Question 4** : * 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 5** : Consider a binary operation * on N defined as . Choose the correct answer. (View Answer Video)

**Question 1** : is equal to : (View Answer Video)

**Question 2** : Write the principal value of (View Answer Video)

**Question 3** : If then value of y lies between.....? (View Answer Video)

**Question 4** : Write in the simplest form:

(View Answer Video)

**Question 5** : Solve for

(View Answer Video)

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

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

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

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

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

**Question 1** : Find the approximate change in the surface area of a cube of side x meters caused by decreasing the side by 1%. (View Answer Video)

**Question 2** : If , then the approximate value of f (3.02) is (View Answer Video)

**Question 3** : The line y = x + 1 is a tangent to the curve at the point: (View Answer Video)

**Question 4** : The line y=mx+1 is a tangent to the curve if the value of m is ________. (View Answer Video)

**Question 5** : Find the approximate change in volume V of a cube of side x meters caused by increasing the side by 1%. (View Answer Video)