CBSE Maths 12 Science MCQ Application of Derivatives Answers in English to enable students to get Answers in a narrative video format for the specific question.

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** Question:**

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

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**Question 1** : Find approximate value of (View Answer Video)

**Question 2** : The slope of the normal to the curve at x = 0 is :

(View Answer Video)

**Question 3** : For the curve, y= if x increases at the rate of 2 units/sec, then how fast is the slope of curve changing when x=3? (View Answer Video)

**Question 4** : Find the approximate change in volume V of a cube of side x meters caused by increasing the side by 1%. (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** : 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 2** : For given vectors,and find the unit vector in the direction of the vector a + b. (View Answer Video)

**Question 3** : Write the value of for which the vectors and are parallel vectors. (View Answer Video)

**Question 4** : Write the position vector of the point which divides the join of points with position vectors and in the ratio 2:1. (View Answer Video)

**Question 5** : Find the magnitude of two vectors a and b having the same magnitude and such that the angle between them is and their scalar product is 1/2. (View Answer Video)

**Question 1** : If x cos(a + y) = cos y, then prove that

Hence show that (View Answer Video)

**Question 2** : Write the differential equation representing the curve where a is an arbitrary constant. (View Answer Video)

**Question 3** : Write the differential equation formed from the equation y = mx + c, where m and c are arbitrary constants.

(View Answer Video)

**Question 4** : Solve the differential equation (View Answer Video)

**Question 5** : Find the solution of the differential equation (View Answer Video)

**Question 1** : is equal to :

(View Answer Video)

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

**Question 3** : Write in the simplest form:

(View Answer Video)

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

(View Answer Video)

**Question 5** : If then value of y lies between.....? (View Answer Video)