Application of Derivatives 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 Application of Derivatives 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 Application of Derivatives 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 slope of the normal to the curve at x = 0 is: **

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

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**Question 1** : A stone is dropped into a quiet lake and waves move in circles at a speed of 4 cm per second. At the instant when the radius of the circular waves is 10 cm, how fast is the enclosed area increasing? (View Answer Video)

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

**Question 3** : Which of the following functions are strictly decreasing on (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** : 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 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)

**Question 1** : Find if and (View Answer Video)

**Question 2** : Find the unit vector in the direction of if and (View Answer Video)

**Question 3** : Evaluate the product (3a - 5b).(2a + 7b). (View Answer Video)

**Question 4** : Find the direction cosines of the vector joining the points A(1, 2, -3) and B(-1, -2, 1) directed from B to A. (View Answer Video)

**Question 5** : Find the scalar quantities from the following:

(i) 10 kg (ii) 2 m north-west (iii)

(iv) 40 W (v) (vi) (View Answer Video)

**Question 1** : Number of binary operations on the set { a, b} are: (View Answer Video)

**Question 2** : be defined as f(x) = (View Answer Video)

**Question 3** : Functions are defined respectively, by , find . (View Answer Video)

**Question 4** : If f(x) = ax + b and g(x) = cx + d, then f[g(x)] – g[f(x)] is equivalent to, (View Answer Video)

**Question 5** : If is a relation on N, write the range of R. (View Answer Video)