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tomit4 2026-06-11 09:13:09 -07:00
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chapter_4/test_yourself.md
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@ -200,3 +200,20 @@ $n \leq x < n + 1$
that ______.
$n - 1 < x \leq n$
---
**Test Yourself**
Page 248
1. To prove a statement by contradiction, you suppose that ______ and you show
that ______.
2. A proof by contraposition of a statement of the form
"$\forall x \in D, \text{ if } P(x) \text{ then } Q(x)$" is a direct proof of
______.
3. To prove a statement of the form
"$\forall x \in D, \text{ if } P(x) \text{ then } Q(x)$" by contraposition,
you suppose that ______ and you show that ______.