
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Please anwser question 12(2.1)

Transcribed Image Text:Definition a .
Axiom 1: r4
Theorem 1: If a is e then q t.
Theorem 2:1 s
is said to be b iffr-
Elt in the missing reasons in the two-column proof that follows:
Theorem: If a is e then a is b.
Proof
Given: a is C
Prove: a is b (i.e.., r s)
CONCLUSIONS
JUSTIFICATIONS
(1) a is c
(2) r
(3) q
(4)t
(5) s
(6) .. a is b
Given
Assumption for r s
Axiom 1
(a)
(b)
(c)
12. Suppose that the following propositions have been proven: (1) ~q → r, and (2) if
r. then either~p or q. Give a paragraph proof of the proposition p q.
13. Suppose it has been established that p implies either r or s, and
Theorem 1: y → ~p
Theorem 2: r → x
Theorem 3: s → y
Theorem 4: x q
Prove, in outline form, that p → q.
GROUP C
the following have been established or assumed:
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