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# 12 Science CBSE Solutions for MCQ Maths Relations and Functions in English

12 Science CBSE Solutions for MCQ Maths Relations and Functions in English to enable students to get Solutions in a narrative video format for the specific question.

Expert Teacher provides 12 Science CBSE Solutions for MCQ Maths Relations and Functions through Video Solutions 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 Relations and Functions 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 English:

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

## Similar Questions from CBSE, 12th Science, Maths, Relations and Functions

Question 1 : Let be defined as f(x) = 3x.  (View Answer Video)

Question 2 :  Let R be the relation on the set {1, 2, 3, 4} given by R = {(1, 2), (2, 2), (1, 1), (4, 4), (1, 3), (3,3), (3,2)}. then R is, (View Answer Video)

Question 3 : Number of binary sets on the set is, (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 be defined as . Choose the correct answer. (View Answer Video)

### Vector Algebra

Question 1 : Find the projection of the vector on the vector (View Answer Video)

Question 2 : Find |x|, if for a unit vector a,(x - a).(x + a) = 12. (View Answer Video)

Question 3 :  Find the scalar quantities from the following:
(i) 10 kg          (ii) 2 m north-west          (iii) (iv) 40 W         (v) (vi) (View Answer Video)

Question 4 : Find if the vectors and are coplanar.   (View Answer Video)

Question 5 : For given vectors, and find the unit vector in the direction of the vector a + b. (View Answer Video)

### Determinant

Question 1 : Let A be square matrix of order 3 * 3, then |kA|is equal to (View Answer Video)

Question 2 :  Find the area of the triangle with vertices at the points (-2, -3), (3, 2), (-1, -8). (View Answer Video)

Question 3 : If the area of a triangle is 35 sq units with vertices (2, -6), (5, 4) and (k, 4). Then k is: (View Answer Video)

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

Question 1 : If , write , where is the transpose of A? (View Answer Video)
Question 3 : Find the transpose of the matrix: . (View Answer Video)
Question 4 : Compute: . (View Answer Video)