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Given a domain of R, tell if it is a function

publish date: 2022/10/03 12:32:00 GMT+11

Let A = {1, 2, 3, 4} and B = {2, 4, 5}

The following are all possible relations from A to B

R1 = {(1, 2), (1, 5), (2, 2), (3, 4), (3, 5), (4, 5)}
R2 = {(1, 4), (4, 2), (4, 5)}
R3 = {(3, 2), (3, 4), (3, 5), (1, 4)}
R4 = {(1, 4), (2, 5), (3, 2), (4, 4)}
R5 = {(1, 2), (2, 5), (3, 4), (4, 4)}

Which of these  relations represent a function

  • R1 (1) a function
  • R2  (2) a function
  • R3 (3) a function
  • R4  (4) a function
  • R5  (5) a function
Please drag and drop the selected option in the right place or type it instead
represents
does not represent

Reference

Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012


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