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Chapter 2: Q11E (page 153)

Which function in Exercise 10 are onto?

Short Answer

Expert verified

Only the function in part (a).

Step by step solution

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01

Step: 1

a) f(a) = b, f(b) = a, f(c) = c, f(d) = b

b)f(a)= b, f(b)= b, f(c)= d, f(d)=c

c)f(a)= d, f(b)= b, f(c)= c, f(d)=d

Only the function in part (a).

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