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Consider the functions f:Z ×Z → Z Which of these are surjective? 1. f(a,b) = a² – b² II. f(a,b) = a² + b III. f (a, b) = |a + b| O a. Only I O b. Only II O c. Only II O d. Only Il and II O e. All of them are surjective O f. None of the above

Consider the functions f:Z ×Z → Z Which of these are surjective? 1. f(a,b) = a² – b² II. f(a,b) = a² + b III. f (a, b) = |a + b| O a. Only I O b. Only II O c. Only II O d. Only Il and II O e. All of them are surjective O f. None of the above

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question 19 Consider the functions f:Z ×Z → Z Which of these are surjective? I. f(a,b) = a² – b² II. f(a,b) = a² + b III. f (а, b) 3D \a + bl O a. Only I O b. Only II O c. Only III O d. Only Il and III O e. All of them are surjective O f. None of the above
Transcribed Image Text:Question 19 Consider the functions f:Z ×Z → Z Which of these are surjective? I. f(a,b) = a² – b² II. f(a,b) = a² + b III. f (а, b) 3D \a + bl O a. Only I O b. Only II O c. Only III O d. Only Il and III O e. All of them are surjective O f. None of the above
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