12 Science Maths CBSE Solutions for MCQ 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 Maths CBSE Solutions for MCQ 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:
The law a + b = b + a is called ______.
Solution Video in English:
You can select video Solutions from other languages also. Please check Solutions in ( Hindi )
Question 1 : Consider given by f(x) = 4x + 3. Find the inverse of f. (View Answer Video)
Question 2 : Consider a binary operation * on N defined as . Choose the correct answer. (View Answer Video)
Question 3 : If is defined by , write f(f(x)). (View Answer Video)
Question 4 : The identity element for the binary operation * defined by a * b = , where a, b are the elements of a set of non-zero rational numbers, is, (View Answer Video)
Question 5 : Let A = {1, 2, 3}. Then, number of relations containing (1, 2) and (1, 3) which are reflexive and symmetric but not transitive is, (View Answer Video)
Question 1 : The rate of change of the area of a circle with respect to its radius r at r=6cm is: (View Answer Video)
Question 2 : For all values of x, the minimum value of is : (View Answer Video)
Question 3 : 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 4 : Find approximate value of (View Answer Video)
Question 5 : If the radius of a sphere is measured as 9 m with an error of 0.03 m, then find the approximate error in calculating its surface area. (View Answer Video)
Question 1 : Find the distance of the point (-1, -5, -10) from the point of intersection of the line joining the points A(2, -1, 2) and B(5, 3, 4) with the plane x - y + z = 5. (View Answer Video)
Question 2 : Find the distance of the point (2, 12, 5) from the point of intersection of the lines and the plane (View Answer Video)
Question 3 : Find the vector equation of the plane with intercepts 3, -4 and 2 on x, y and z-axis respectively. (View Answer Video)
Question 4 : Write the direction ratio's of the vector where and (View Answer Video)
Question 5 : A plane makes intercepts -6, 3, 4 respectively on the co-ordinte axes. Find the length of the perpendicular from the origin on it. (View Answer Video)
Question 1 : Points (a,a,c),(1,0,1) and (c,c,b) are collinear if: (View Answer Video)
Question 2 : The solution of the following system of equation is 2x + 3y = 5, 5x – 2y = 3. (View Answer Video)
Question 3 : Find the values of x, if . (View Answer Video)
Question 4 : Find the area of the triangle with vertices at the points (2, 7), (1, 1), (10, 8). (View Answer Video)
Question 5 : Transpose of a column matrix is, (View Answer Video)