Question
Asked Nov 20, 2019
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18. What can you deduce about the sets X and Y if you know,
a. there is an injective function f: X Y? Explain.
b. there is a surjective functionf:X
Y? Explain.
c. there is a bijective function f: XY? Explain.
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18. What can you deduce about the sets X and Y if you know, a. there is an injective function f: X Y? Explain. b. there is a surjective functionf:X Y? Explain. c. there is a bijective function f: XY? Explain.

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Step 1

Given that two sets X and Y.

a)There is an injective function

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f:X-Y

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Step 2

This means

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Y X а g b ч +h с

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Step 3

That is

f(a) = f(s)

this implies that

a = s

 

 

b)There ...

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f:XY

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