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

Expert Teacher provides MCQ Answers for CBSE 12 Science Maths Continuity and Differentiability 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 Continuity and Differentiability 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:**

** Using the fact that and the differentiation, obtain the sum formula for cosines. **

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

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

**Question 1** : Differentiate the function w.r.t.x . (View Answer Video)

**Question 2** : Find the second order derivative of the function . (View Answer Video)

**Question 3** : Differentiate w.r.t.x the function . (View Answer Video)

**Question 4** : Find the value of k, if the area of the triangle is 4 sq unit and vertices are (-2, 0), (0, 4), (0, k). (View Answer Video)

**Question 5** : Find for the function . (View Answer Video)

**Question 1** : L and M are two points with position vectors and respectively. Write the position vectors of a point N which divides the line segment LM in the ratio 2:1 externally. (View Answer Video)

**Question 2** : Write a vector in the direction of the vector that has magnitude 9 units. (View Answer Video)

**Question 3** : Find the angle between the vectors and (View Answer Video)

**Question 4** : Find a vector in the direction of that has magnitude 7 units. (View Answer Video)

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

**Question 1** : Let Find AB. (View Answer Video)

**Question 2** : If for any square matrix A, then write the value of |A|. (View Answer Video)

**Question 3** : Find the transpose of the matrix: . (View Answer Video)

**Question 4** : If , then find "a". (View Answer Video)

**Question 5** : If A is a square matrix such that, then find the simplified value of:. (View Answer Video)

**Question 1** : Letbe defined as f(x) = 3x. (View Answer Video)

**Question 2** : A function defined as is, (View Answer Video)

**Question 3** : Let defined as f(x) = x be an identity function. Then, (View Answer Video)

**Question 4** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 20 * 16. (View Answer Video)

**Question 5** : Let defined as f(x) = 5 be a constant function. Then its range is (View Answer Video)