8. For each of the functions below, indicate whether the function is onto, one-to-one, neither or both. If the function is not onto or not one-to-one, give an example showing why. If the function is one-to-one and onto, give the inverse of the function. (a) f : {0,1}3 → {0, 1}³. The output of f is obtained by swapping the first and the last bits of x. For example f(110) : 011. (b) f : {0,1}4 → {0, 1}³. The output of f is obtained by replacing the last two bits with 0. For example f(1111) = 110. (c) f : {0,1}3 –→ {0, 1}4. The output of f is obtained by adding a 1 to the end of the string. For example f(100) = 1001.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
Section: Chapter Questions
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8. For each of the functions below, indicate whether the function is onto, one-to-one,
neither or both. If the function is not onto or not one-to-one, give an example showing
why. If the function is one-to-one and onto, give the inverse of the function.
(a) f : {0,1}³ → {0,1}³. The output of f is obtained by swapping the first and the
last bits of x. For example f(110) = 011.
(b) ƒ : {0,1}ª → {0, 1}³. The output of f is obtained by replacing the last two bits
with 0. For example f(1111) =110.
(c) f : {0,1}³ –→ {0, 1}4. The output of f is obtained by adding a 1 to the end of the
string. For example f(100) = 1001.
(d) X = {a, b, c, d}. f : P(X) → P(X). For A C X, f(A) = An{a, b, c}.
Transcribed Image Text:8. For each of the functions below, indicate whether the function is onto, one-to-one, neither or both. If the function is not onto or not one-to-one, give an example showing why. If the function is one-to-one and onto, give the inverse of the function. (a) f : {0,1}³ → {0,1}³. The output of f is obtained by swapping the first and the last bits of x. For example f(110) = 011. (b) ƒ : {0,1}ª → {0, 1}³. The output of f is obtained by replacing the last two bits with 0. For example f(1111) =110. (c) f : {0,1}³ –→ {0, 1}4. The output of f is obtained by adding a 1 to the end of the string. For example f(100) = 1001. (d) X = {a, b, c, d}. f : P(X) → P(X). For A C X, f(A) = An{a, b, c}.
(e) X = {a, b, c, d}. f : P(X) → {0,1, 2, 3, 4, 5}. For A C X, f(A) = |A|.
Transcribed Image Text:(e) X = {a, b, c, d}. f : P(X) → {0,1, 2, 3, 4, 5}. For A C X, f(A) = |A|.
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