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

Expert Teacher provides Maths Vector Algebra CBSE 12 Science MCQ English Answers. 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 Answer in a narrative video format.

** Question:**

** Find the scalar components of the vector with initial point A (2, 1) and terminal point B (-5, 7). **

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

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

**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 unit vector in the direction of the vector (View Answer Video)

**Question 3** : Find the vector quantities :

(i) Work (ii) Force

(iii) Velocity (iv) Displacement. (View Answer Video)

**Question 4** : Find the scalar components of the vector with initial point A (2, 1) and terminal point B (-5, 7). (View Answer Video)

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

(i) Time period (ii) Distance (iii) Force

(iv) Velocity (v) Work done

(View Answer Video)

**Question 1** : Find for the function . (View Answer Video)

**Question 2** : If x and y are connected parametrically by the equation , without eliminating the parameter, find . (View Answer Video)

**Question 3** : Differentiate the function with respect to x. (View Answer Video)

**Question 4** : If and , find . (View Answer Video)

**Question 5** : Differentiate w.r.t.x the function . (View Answer Video)

**Question 1** : The line is a tangent to the curve at the point. (View Answer Video)

**Question 2** : 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 3** : The slope of the normal to the curve at x = 0 is: (View Answer Video)

**Question 4** : The points on the curve , where the normal to the curve makes equal intercepts with the axes are, (View Answer Video)

**Question 5** : For all real values of x the minimum value of. (View Answer Video)

**Question 1** : Find the area of the region bounded by the parabola and y = | x |. (View Answer Video)

**Question 2** : Given that , for x = 0 to x = 20. Find f(x) and g(x) such that the area between f(x) and from x = 0 to x = 5 be and area between g(x) and from y = 0 to y = 5 be . Is = ? Like functions f and g which work is better, team work or individual work? (View Answer Video)

**Question 3** :

Find the area of the given curves and given lines:

and x-axis

**Question 4** : Find the area bounded by curves . (View Answer Video)

**Question 5** : Using integration, find the area of the co-ordinates whose vertices are P(2,0), Q(4, 5) and R(6,3). (View Answer Video)