Solutions for MCQ CBSE 12 Science Maths Vector Algebra in Hindi to enable students to get Solutions in a narrative video format for the specific question.

Expert Teacher provides Solutions for MCQ CBSE 12 Science Maths Vector Algebra through Video Solutions in Hindi 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 Vector Algebra 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** **Hindi****:**

You can select video Solutions from other languages also. Please check Solutions in ( English )

**Question 1** : If and are two equal vectors, then write the value of (View Answer Video)

**Question 2** : Find a vector in the direction of vector which has magnitude 21 units. (View Answer Video)

**Question 3** : Write a vector in the direction of the vector that has magnitude 9 units. (View Answer Video)

**Question 4** : Write a unit vector in the direction of the sum of vectors and (View Answer Video)

**Question 5** : Find a unit vector in the direction of (View Answer Video)

**Question 1** : is equal to :

(View Answer Video)

**Question 1** : Write the sum of the order and degree of the differential equation (View Answer Video)

**Question 2** : Write the differential equation representing the family of curves y = mx, where m is an arbitrary constant. (View Answer Video)

**Question 3** : Write the degree of the differential equation (View Answer Video)

**Question 4** : Write the degree of the differential equation (View Answer Video)

**Question 5** : Solve the differential equation (View Answer Video)

**Question 1** : The maximum value of is (View Answer Video)

**Question 2** : 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 3** : Ifthen the approximate value of f(3.02) is : (View Answer Video)

**Question 4** : The total cost C(x) (in Rs) associated with the production of 'x' units of an item is given by :

C (x)=0.005x^{3}-0.02x^{2}+30x+5000.

Find the marginal cost when 3 units are produced, where by marginal cost we mean the instantaneous rate of change of total cost at any level of output. (View Answer Video)

**Question 5** : The rate of change of the area of a circle with respect to its radius r at r=6cm is: (View Answer Video)