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** : What is the maximum value of the function sin x+ cos x? (View Answer Video)

**Question 2** : The line y = x + 1 is a tangent to the curve at the point: (View Answer Video)

**Question 3** : 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 4** : The function f is a differentiable function and satisfies the functional equation f(x) + f(y) = f(x + y) – xy – 1for every pair x, y of real numbers. If f(1) = 1, then the number of integers n ≠ 1 for which f(n) = n is_______________. (View Answer Video)

**Question 5** : Find the maximum value of in the interval [1,3]. find the maximum value of the same function in [-3,-1]. (View Answer Video)

**Question 1** : Write the principal value of (View Answer Video)

**Question 2** : Solve for

(View Answer Video)

**Question 3** : is equal to :

(View Answer Video)

**Question 4** : Write in the simplest form. (View Answer Video)

**Question 5** : If then write the value of x + y + xy. (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** : 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** : Compute the magnitude of the following vectors:

(View Answer Video)

**Question 3** : Find the scalar quantities from the following:

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

(iv) Velocity (v) Work done (View Answer Video)

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

**Question 5** : Find if the vectors and are coplanar. (View Answer Video)