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

Expert Teacher provides CBSE Answers for MCQ 12 Science Maths Application of Derivatives 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:**

** Find two positive numbers x and y such that x+y=60 and is maximum. **

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

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

**Question 1** : The point on the curve which is nearest to the point (0, 5) is :

(View Answer Video)

**Question 2** : 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 3** : The approximate change in the volume of a cube of side x meters caused by increasing the side by 3% is _____________. (View Answer Video)

**Question 4** : Find two positive numbers x and y such that x+y=60 and is maximum. (View Answer Video)

**Question 5** : 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 1** : P and Q are two points with position vectors and respectively. Write the position vector of a point R which divides the line segment PQ externally in the ratio 2:1. (View Answer Video)

**Question 2** : Find the area of the parallelogram whose adjacent sides are determined by the vectors and (View Answer Video)

**Question 3** : Write a unit vector in the direction of the sum of vectors and (View Answer Video)

**Question 4** : The two vectors and represent the two sides AB and AC, respectively of Find the length of the median

though A. (View Answer Video)

**Question 5** : Find the value of x and y so that the vectors and are equal. (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** : Let A ={1, 2, 3}. Then number of equivalence relations containing (1, 2) is: (View Answer Video)

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

**Question 3** : Number of binary operations on the set { a, b} are: (View Answer Video)

**Question 4** : What type of function is the sine function in R? (View Answer Video)

**Question 5** : If and are onto, then is: (View Answer Video)