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Introduction to Functions, Class 12 Mathematics NCERT Solutions

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1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. Let 7044_image020 such that f(x) = x | x | then f is

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Question 1 of 20

2. Let f : R → R defined as f(x) = x be an identity function. Then

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Question 2 of 20

3. Let A = {1, 2, 3} and B = {5, 6, 7, 8, 9} and let f(x) = {(1, 8), (2, 7), (3, 6)} then f is

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Question 3 of 20

4. 13211_image002In the mapping above, the function f 4 is an:

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Question 4 of 20

5. Let 7043_image012 be defined by 7043_image019Then, the function f is

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Question 5 of 20

6. A function f: R → R defined as f(x) = x4 is

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Question 6 of 20

7. A function f: X → Y is bijective if and only if

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Question 7 of 20

8. A function f: X → Y is injective if and only if
Introduction to Functions Multiple Choice Questions for CBSE Class 12 Mathematics   Topperlearning

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Question 8 of 20

9. A function f: R → R defined as f(x) = 5x is

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Question 9 of 20

10. A function f: X → Y is surjective if and only if

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Question 10 of 20

11. The range of function f:Rrightwards arrowR defined by f(x) =x2is

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Question 11 of 20

12. Let f : R → R defined as f(x) = 5 be a constant function. Then

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Question 12 of 20

13. Graph of y = x3 represents which type of function

15488_graph_x3

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Question 13 of 20

14. Consider a parabola with its axis along the Y-axis. The corresponding function is __-
15489_para

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Question 14 of 20

15. Let 7039_image008 be a function defined as f(x) = x4.then

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Question 15 of 20

16. The function, f(x) = 2x + 1 is

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Question 16 of 20

17. The function 7040_image008 defined by 7040_image010 is a

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Question 17 of 20

18. Let f: {1, 2, 3} → {1, 2, 3} be an onto function. Then, f is

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Question 18 of 20

19. A function f: Z → Z defined as f(x) = x3 is

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Question 19 of 20

20. Let X = R – {5} and Y = R – {4}, consider the function 7042_image001 defined by 7042_image015 then f is

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Question 20 of 20

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