CBSE Maths 12 Science Application of Derivatives Answers for MCQ 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** : The rate of change of the area of a circle with respect to its radius r at r = 6 cm is : (View Answer Video)

**Question 2** : It is given that at x=1, the function attains its maximum value on the interval[0,2]. Find the value of a? (View Answer Video)

**Question 3** : Find two numbers whose sum is 24 and whose product is as large as possible. (View Answer Video)

**Question 4** : The total revenue (in Rs) received from the sale of 'x' units of a product is given by :

R(x) =3x^{2}+36x+5.

FInd the marginal revenue when x=5, where by marginal revenue we mean the rate of change of total revenue with respect to the number of items sold at an instant. (View Answer Video)

**Question 5** : Find two positive numbers x and y such that x+y=60 and is maximum. (View Answer Video)

**Question 1** : Using the method of integration, find the area of the region bounded by the lines: 5x - 2y -10 = 0, x + y - 9 = 0 and 2x - 5y - 4 = 0. (View Answer Video)

**Question 2** : Find the area of the given curves and given lines:

and x-axis (View Answer Video)

**Question 3** : Area lying in the first quadrant and bounded by the circle and the lines x =0 and x = 2 is (View Answer Video)

**Question 4** : Find the area of the region enclosed by the parabola the line y = x + 2. (View Answer Video)

**Question 5** : Find the area bounded by the curve y = sin x between x = 0 and (View Answer Video)

**Question 1** : Find the inverse of the matrix, . (View Answer Video)

**Question 2** : Matrices A and B will be inverse of each other only if : (View Answer Video)

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

**Question 4** : Find the value of y from the equation: . (View Answer Video)

**Question 5** : Let Find BA. (View Answer Video)

**Question 1** : Evaluate : (View Answer Video)

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

**Question 3** : . (View Answer Video)

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

**Question 5** : Evaluate : (View Answer Video)