Determine whether the following statement is true or false. Justify your answer with a proof or a counterexample. as appropriate. For all integers m. m²– m+ 11 is a prime mumber.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 63RE
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Question 1
1.
answer with a proof or a counterexample. as appropriate.
Determine whether the following statement is true or false. Justify your
For all integers m. nº – m+ 1 is a prime mumber.
Determine whether the following statement is true or false. Justify
2.3
your answer with a proof or a counterexample, as appropriate.
If a positive integer m has a remainder 1 when divided by 3, then m² also has
remainder 1 when divided by 3.
3.
What was tried to be proven in this proof?
Proof. Suppose m is an even integer and is an odd integer. By definition
2g for some integer q and by definition of odd, n
2r+1 for some in-
of even, m =
teger n. Thus mn=
because products and sums of integers are integers. Hence mn=
and so, by definition of even, mn is even.
(29)(2r+1) = 1qr+2q = 2(2qr +q). Now 2gr +q is an integer
2-(some integer).
Transcribed Image Text:Question 1 1. answer with a proof or a counterexample. as appropriate. Determine whether the following statement is true or false. Justify your For all integers m. nº – m+ 1 is a prime mumber. Determine whether the following statement is true or false. Justify 2.3 your answer with a proof or a counterexample, as appropriate. If a positive integer m has a remainder 1 when divided by 3, then m² also has remainder 1 when divided by 3. 3. What was tried to be proven in this proof? Proof. Suppose m is an even integer and is an odd integer. By definition 2g for some integer q and by definition of odd, n 2r+1 for some in- of even, m = teger n. Thus mn= because products and sums of integers are integers. Hence mn= and so, by definition of even, mn is even. (29)(2r+1) = 1qr+2q = 2(2qr +q). Now 2gr +q is an integer 2-(some integer).
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