The following functions all have {1, 2, 3, 4, 5} as both their domain and codomain. For each, determine whether is (only) injective, (only) surjective, bijective, or neither injective nor surjective.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The following functions all have {1, 2, 3, 4, 5} as both their domain and codomain. For each, determine whether it
is (only) injective, (only) surjective, bijective, or neither injective nor surjective.
(4-x
I
f(x) = {4-7 ifz>4
9
injective surjective bijective neither
2 3 4 5
1 2 2 3
injective surjective bijective neither
f=
=
1
1
f=
1
4 4 2 3 1
injective surjective bijective neither
=
2 3 4 5
f(x) = {
5)
if x < 4
2 if x ≥ 4
injective surjective bijective neither
I
I
Transcribed Image Text:The following functions all have {1, 2, 3, 4, 5} as both their domain and codomain. For each, determine whether it is (only) injective, (only) surjective, bijective, or neither injective nor surjective. (4-x I f(x) = {4-7 ifz>4 9 injective surjective bijective neither 2 3 4 5 1 2 2 3 injective surjective bijective neither f= = 1 1 f= 1 4 4 2 3 1 injective surjective bijective neither = 2 3 4 5 f(x) = { 5) if x < 4 2 if x ≥ 4 injective surjective bijective neither I I
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