9. If f(x) # 0f and f(x) is relatively prime to Or, what can be said about f(x)?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Thomas W. Hungerford - Abstrac x
b My Questions | bartleby
O File | C:/Users/angel/Downloads/Thomas%20W.%20Hungerford%20-%20Abstract%20Algebra_%20AN%20lntroduction-Cengage%20Learning%20(201..
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122
(g) 2x* + 5x³ – 5x - 2 and 2x – 3x² – 2x in Q[x].
6. Express each of the gcd's in Exercise 5 as a linear combination of the two
polynomials.
B. 7. Let f(x) E F[x] and assume that f(x)|g(x) for every nonconstant g(x)E F[x]. Show
that f(x) is a constant polynomial. [Hint: f(x) must divide both x + 1 and x.]
8. Let f(x), g(x)E F[x], not both zero, and let d(x) be their gcd. If h(x) is a
common divisor of f(x) and g(x) of highest possible degree, then prove that
h(x) = cd(x) for some nonzero cEF.
%3D
9. If f(x) # OF and f(x) is relatively prime to Or, what can be said about f(x)?
10. Find the gcd of x + a + b and x3 – 3abx + a³ + b³ in Q[x].
11. Fill in the details of the proof of Theorem 4.8.
12. Prove Corollary 4.9.
13. Prove Theorem 4.10.
Coutseome1.
14. Let f(x), g(x), h(x)E F[x], with f(x) and g(x) relatively prime. If f(x)|h(x) and
g(x) |h(x), prove that f(x)g(x)|h(x).
9:16 AM
O Search for anything
EPIC
Ai
EPIC
O 4)
34
12/7/2020
Transcribed Image Text:Thomas W. Hungerford - Abstrac x b My Questions | bartleby O File | C:/Users/angel/Downloads/Thomas%20W.%20Hungerford%20-%20Abstract%20Algebra_%20AN%20lntroduction-Cengage%20Learning%20(201.. ... Flash Player will no longer be supported after December 2020. Turn off Learn more of 621 + -- A Read aloud V Draw F Highlight O Erase 122 (g) 2x* + 5x³ – 5x - 2 and 2x – 3x² – 2x in Q[x]. 6. Express each of the gcd's in Exercise 5 as a linear combination of the two polynomials. B. 7. Let f(x) E F[x] and assume that f(x)|g(x) for every nonconstant g(x)E F[x]. Show that f(x) is a constant polynomial. [Hint: f(x) must divide both x + 1 and x.] 8. Let f(x), g(x)E F[x], not both zero, and let d(x) be their gcd. If h(x) is a common divisor of f(x) and g(x) of highest possible degree, then prove that h(x) = cd(x) for some nonzero cEF. %3D 9. If f(x) # OF and f(x) is relatively prime to Or, what can be said about f(x)? 10. Find the gcd of x + a + b and x3 – 3abx + a³ + b³ in Q[x]. 11. Fill in the details of the proof of Theorem 4.8. 12. Prove Corollary 4.9. 13. Prove Theorem 4.10. Coutseome1. 14. Let f(x), g(x), h(x)E F[x], with f(x) and g(x) relatively prime. If f(x)|h(x) and g(x) |h(x), prove that f(x)g(x)|h(x). 9:16 AM O Search for anything EPIC Ai EPIC O 4) 34 12/7/2020
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