
Nature of Mathematics (MindTap Course List)
13th Edition
ISBN: 9781133947257
Author: karl J. smith
Publisher: Cengage Learning
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Chapter 3.1, Problem 51PS
To determine
To Find:
The truth value of the given compound statement
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Problem 11 (a) A tank is discharging water through an orifice at a depth of T
meter below the surface of the water whose area is A m². The
following are the values of a for the corresponding values of A:
A 1.257 1.390
x 1.50 1.65
1.520 1.650 1.809 1.962 2.123 2.295 2.462|2.650
1.80 1.95 2.10 2.25 2.40 2.55 2.70
2.85
Using the formula
-3.0
(0.018)T =
dx.
calculate T, the time in seconds for the level of the water to drop
from 3.0 m to 1.5 m above the orifice.
(b) The velocity of a train which starts from rest is given by the fol-
lowing table, the time being reckoned in minutes from the start
and the speed in km/hour:
| † (minutes) |2|4 6 8 10 12
14 16 18 20
v (km/hr) 16 28.8 40 46.4 51.2 32.0 17.6 8 3.2 0
Estimate approximately the total distance ran in 20 minutes.
-
Let n = 7, let p = 23 and let S be the set of least positive residues mod p of the first (p − 1)/2
multiple of n, i.e.
n mod p, 2n mod p, ...,
p-1
2
-n mod p.
Let T be the subset of S consisting of those residues which exceed p/2.
Find the set T, and hence compute the Legendre symbol (7|23).
23
32
how come?
The first 11 multiples of 7 reduced mod 23 are
7, 14, 21, 5, 12, 19, 3, 10, 17, 1, 8.
The set T is the subset of these residues exceeding
So T = {12, 14, 17, 19, 21}.
By Gauss' lemma (Apostol Theorem 9.6),
(7|23) = (−1)|T| = (−1)5 = −1.
Let n = 7, let p = 23 and let S be the set of least positive residues mod p of the first (p-1)/2
multiple of n, i.e.
n mod p, 2n mod p, ...,
2
p-1
-n mod p.
Let T be the subset of S consisting of those residues which exceed p/2.
Find the set T, and hence compute the Legendre symbol (7|23).
The first 11 multiples of 7 reduced mod 23 are
7, 14, 21, 5, 12, 19, 3, 10, 17, 1, 8.
23
The set T is the subset of these residues exceeding
2°
So T = {12, 14, 17, 19, 21}.
By Gauss' lemma (Apostol Theorem 9.6),
(7|23) = (−1)|T| = (−1)5 = −1.
how come?
Chapter 3 Solutions
Nature of Mathematics (MindTap Course List)
Ch. 3.1 - Prob. 1PSCh. 3.1 - IN YOUR OWN WORDS What do we mean by conjunction?...Ch. 3.1 - Prob. 3PSCh. 3.1 - Prob. 4PSCh. 3.1 - Prob. 5PSCh. 3.1 - Prob. 6PSCh. 3.1 - Prob. 7PSCh. 3.1 - According to the definition, which of the examples...Ch. 3.1 - Prob. 9PSCh. 3.1 - Prob. 10PS
Ch. 3.1 - Answer the questions in Problems 914 about the...Ch. 3.1 - Prob. 12PSCh. 3.1 - Prob. 13PSCh. 3.1 - Prob. 14PSCh. 3.1 - Prob. 15PSCh. 3.1 - Prob. 16PSCh. 3.1 - Prob. 17PSCh. 3.1 - Prob. 18PSCh. 3.1 - Prob. 19PSCh. 3.1 - Write the negation of each statement in Problems...Ch. 3.1 - Prob. 21PSCh. 3.1 - Write the negation of each statement in Problems...Ch. 3.1 - Prob. 23PSCh. 3.1 - Prob. 24PSCh. 3.1 - Prob. 25PSCh. 3.1 - Prob. 26PSCh. 3.1 - Prob. 27PSCh. 3.1 - Let p: Prices will rise;q: Taxes will rise....Ch. 3.1 - Prob. 29PSCh. 3.1 - Prob. 30PSCh. 3.1 - Prob. 31PSCh. 3.1 - Let p: Today is Friday;q: There is homework...Ch. 3.1 - Assume p is T and q is T. Under these assumptions,...Ch. 3.1 - Prob. 34PSCh. 3.1 - Prob. 35PSCh. 3.1 - Prob. 36PSCh. 3.1 - Prob. 37PSCh. 3.1 - Prob. 38PSCh. 3.1 - Prob. 39PSCh. 3.1 - Prob. 40PSCh. 3.1 - Prob. 41PSCh. 3.1 - Translate the word statements in Problems 4149...Ch. 3.1 - Translate the word statements in Problems 4149...Ch. 3.1 - Prob. 44PSCh. 3.1 - Prob. 45PSCh. 3.1 - Prob. 46PSCh. 3.1 - Translate the word statements in Problems 4149...Ch. 3.1 - Translate the word statements in Problems 4149...Ch. 3.1 - Translate the word statements in Problems 4149...Ch. 3.1 - Prob. 50PSCh. 3.1 - Prob. 51PSCh. 3.1 - Prob. 52PSCh. 3.1 - Prob. 53PSCh. 3.1 - Prob. 54PSCh. 3.1 - Prob. 55PSCh. 3.1 - Prob. 56PSCh. 3.1 - Prob. 57PSCh. 3.1 - Prob. 58PSCh. 3.1 - Prob. 59PSCh. 3.1 - Prob. 60PSCh. 3.2 - In Your own words What is a truth table?Ch. 3.2 - Prob. 2PSCh. 3.2 - Prob. 3PSCh. 3.2 - Prob. 4PSCh. 3.2 - Prob. 5PSCh. 3.2 - Prob. 6PSCh. 3.2 - Prob. 7PSCh. 3.2 - Prob. 8PSCh. 3.2 - Prob. 9PSCh. 3.2 - Prob. 10PSCh. 3.2 - Prob. 11PSCh. 3.2 - Prob. 12PSCh. 3.2 - Prob. 13PSCh. 3.2 - Prob. 14PSCh. 3.2 - Prob. 15PSCh. 3.2 - Prob. 16PSCh. 3.2 - Prob. 17PSCh. 3.2 - Prob. 18PSCh. 3.2 - Prob. 19PSCh. 3.2 - Prob. 20PSCh. 3.2 - Prob. 21PSCh. 3.2 - Prob. 22PSCh. 3.2 - Prob. 23PSCh. 3.2 - Prob. 24PSCh. 3.2 - Prob. 25PSCh. 3.2 - Prob. 26PSCh. 3.2 - Prob. 27PSCh. 3.2 - Write the converse, inverse, and contrapositive of...Ch. 3.2 - Prob. 29PSCh. 3.2 - Write the converse, inverse, and contrapositive of...Ch. 3.2 - Prob. 31PSCh. 3.2 - Translate the sentences in problems 31-38 into...Ch. 3.2 - Prob. 33PSCh. 3.2 - Prob. 34PSCh. 3.2 - Prob. 35PSCh. 3.2 - Translate the sentences in problems 31-38 into...Ch. 3.2 - Prob. 37PSCh. 3.2 - Prob. 38PSCh. 3.2 - Prob. 39PSCh. 3.2 - Prob. 40PSCh. 3.2 - Prob. 41PSCh. 3.2 - Prob. 42PSCh. 3.2 - Prob. 43PSCh. 3.2 - Prob. 44PSCh. 3.2 - Prob. 45PSCh. 3.2 - Prob. 46PSCh. 3.2 - Prob. 47PSCh. 3.2 - Prob. 48PSCh. 3.2 - Prob. 49PSCh. 3.2 - Prob. 50PSCh. 3.2 - Prob. 51PSCh. 3.2 - Prob. 52PSCh. 3.2 - Prob. 53PSCh. 3.2 - Prob. 54PSCh. 3.2 - Prob. 55PSCh. 3.2 - Prob. 56PSCh. 3.2 - Prob. 57PSCh. 3.2 - Prob. 58PSCh. 3.2 - Decide about the truth or falsity of the following...Ch. 3.2 - Prob. 60PSCh. 3.3 - IN YOUR OWN WORDS Discuss the difference between...Ch. 3.3 - Prob. 2PSCh. 3.3 - IN YOUR OWN WORDS Discuss when you use the symbols...Ch. 3.3 - Prob. 4PSCh. 3.3 - Prob. 5PSCh. 3.3 - Use the parking signs in this photograph to answer...Ch. 3.3 - Prob. 7PSCh. 3.3 - Prob. 8PSCh. 3.3 - Prob. 9PSCh. 3.3 - Prob. 10PSCh. 3.3 - Prob. 11PSCh. 3.3 - Prob. 12PSCh. 3.3 - Prob. 13PSCh. 3.3 - Prob. 14PSCh. 3.3 - Prob. 15PSCh. 3.3 - Prob. 16PSCh. 3.3 - Prob. 17PSCh. 3.3 - Verify the indicated definition in Problems 15-18...Ch. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Prob. 23PSCh. 3.3 - Prob. 24PSCh. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Prob. 26PSCh. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Translate the statements in Problems 19-28 into...Ch. 3.3 - Prob. 29PSCh. 3.3 - Prob. 30PSCh. 3.3 - Prob. 31PSCh. 3.3 - Prob. 32PSCh. 3.3 - Prob. 33PSCh. 3.3 - Prob. 34PSCh. 3.3 - Prob. 35PSCh. 3.3 - Prove the law of double negation by using a truth...Ch. 3.3 - Prob. 37PSCh. 3.3 - Prob. 38PSCh. 3.3 - Prob. 39PSCh. 3.3 - Prob. 40PSCh. 3.3 - Prob. 41PSCh. 3.3 - Prob. 42PSCh. 3.3 - Prob. 43PSCh. 3.3 - Prob. 44PSCh. 3.3 - Prob. 45PSCh. 3.3 - Prob. 46PSCh. 3.3 - Prob. 47PSCh. 3.3 - Prob. 48PSCh. 3.3 - Prob. 49PSCh. 3.3 - Prob. 50PSCh. 3.3 - Prob. 51PSCh. 3.3 - Prob. 52PSCh. 3.3 - Prob. 53PSCh. 3.3 - Prob. 54PSCh. 3.3 - Prob. 55PSCh. 3.3 - Prob. 56PSCh. 3.3 - Prob. 57PSCh. 3.3 - Prob. 58PSCh. 3.3 - Prob. 59PSCh. 3.3 - Prob. 60PSCh. 3.4 - Prob. 1PSCh. 3.4 - Prob. 2PSCh. 3.4 - Prob. 3PSCh. 3.4 - Prob. 4PSCh. 3.4 - Prob. 5PSCh. 3.4 - Prob. 6PSCh. 3.4 - Determine whether each argument in Problems 5-8 is...Ch. 3.4 - Prob. 8PSCh. 3.4 - Determine whether each argument in Problems 9-28...Ch. 3.4 - Prob. 10PSCh. 3.4 - Determine whether each argument in Problems 9-28...Ch. 3.4 - Prob. 12PSCh. 3.4 - Prob. 13PSCh. 3.4 - Prob. 14PSCh. 3.4 - Prob. 15PSCh. 3.4 - Prob. 16PSCh. 3.4 - Prob. 17PSCh. 3.4 - Determine whether each argument in Problems 9-28...Ch. 3.4 - Prob. 19PSCh. 3.4 - Prob. 20PSCh. 3.4 - Prob. 21PSCh. 3.4 - Prob. 22PSCh. 3.4 - Determine whether each argument in Problems 9-28...Ch. 3.4 - Prob. 24PSCh. 3.4 - Prob. 25PSCh. 3.4 - Prob. 26PSCh. 3.4 - Prob. 27PSCh. 3.4 - Prob. 28PSCh. 3.4 - Prob. 29PSCh. 3.4 - Prob. 30PSCh. 3.4 - Use a symbolic argument in Problems 29-32 to...Ch. 3.4 - Prob. 32PSCh. 3.4 - Prob. 33PSCh. 3.4 - Prob. 34PSCh. 3.4 - Prob. 35PSCh. 3.4 - prove that [(pq)p]q is an invalid argument. What...Ch. 3.4 - In Problems 37-48, form a valid conclusion, using...Ch. 3.4 - In Problems 37-48, form a valid conclusion, using...Ch. 3.4 - In Problems 37-48, form a valid conclusion, using...Ch. 3.4 - In Problems 37-48, form a valid conclusion, using...Ch. 3.4 - In Problems 37-48, form a valid conclusion, using...Ch. 3.4 - In Problems 37-48, form a valid conclusion, using...Ch. 3.4 - Prob. 43PSCh. 3.4 - Prob. 44PSCh. 3.4 - Prob. 45PSCh. 3.4 - Prob. 46PSCh. 3.4 - Prob. 47PSCh. 3.4 - Prob. 48PSCh. 3.4 - Prob. 49PSCh. 3.4 - HISTORICAL QUEST In Problems 49-52, write a valid...Ch. 3.4 - HISTORICAL QUEST In Problems 49-52, write a valid...Ch. 3.4 - Prob. 52PSCh. 3.4 - Prob. 53PSCh. 3.4 - Prob. 54PSCh. 3.4 - Prob. 55PSCh. 3.4 - The CASE OF THE TUMBLED TOWER Dwayne got up at...Ch. 3.4 - Prob. 57PSCh. 3.4 - HISTORICAL QUEST Form valid conclusions in...Ch. 3.4 - HISTORICAL QUEST Form valid conclusions in...Ch. 3.4 - HISTORICAL QUEST Form valid conclusions in...Ch. 3.5 - For each of the situations in Problems 1 8,...Ch. 3.5 - For each of the situations in Problems 1 8,...Ch. 3.5 - Prob. 3PSCh. 3.5 - Prob. 4PSCh. 3.5 - Prob. 5PSCh. 3.5 - Prob. 6PSCh. 3.5 - Prob. 7PSCh. 3.5 - Prob. 8PSCh. 3.5 - Prob. 9PSCh. 3.5 - Use the definitions and postulates given in...Ch. 3.5 - Prob. 11PSCh. 3.5 - Prob. 12PSCh. 3.5 - Prob. 13PSCh. 3.5 - Prob. 14PSCh. 3.5 - Prob. 15PSCh. 3.5 - Prob. 16PSCh. 3.5 - Prob. 17PSCh. 3.5 - Prob. 18PSCh. 3.5 - Prob. 19PSCh. 3.5 - Prob. 20PSCh. 3.5 - Prob. 21PSCh. 3.5 - Prob. 22PSCh. 3.5 - Prob. 23PSCh. 3.5 - In a certain kingdom, there were knights and...Ch. 3.5 - Bear Problem A fox, hunting for a morsel of food,...Ch. 3.5 - Prob. 26PSCh. 3.5 - Prob. 27PSCh. 3.5 - Teacher Convention A group of 50 teachers and...Ch. 3.5 - Prob. 29PSCh. 3.5 - Prob. 30PSCh. 3.5 - Consider a silly game called Bluffhead in which...Ch. 3.5 - Prob. 32PSCh. 3.5 - Prob. 33PSCh. 3.5 - Prob. 34PSCh. 3.5 - Prob. 35PSCh. 3.5 - Prob. 36PSCh. 3.5 - Prob. 37PSCh. 3.5 - Prob. 38PSCh. 3.5 - Prob. 39PSCh. 3.5 - Prob. 40PSCh. 3.5 - Prob. 41PSCh. 3.5 - In Problems 37 54, fill in each blank with a...Ch. 3.5 - In Problems 37 54, fill in each blank with a...Ch. 3.5 - Prob. 44PSCh. 3.5 - Prob. 45PSCh. 3.5 - Prob. 46PSCh. 3.5 - Prob. 47PSCh. 3.5 - Prob. 48PSCh. 3.5 - Prob. 49PSCh. 3.5 - Prob. 50PSCh. 3.5 - Prob. 51PSCh. 3.5 - Prob. 52PSCh. 3.5 - Prob. 53PSCh. 3.5 - Prob. 54PSCh. 3.5 - Prob. 55PSCh. 3.5 - Prob. 56PSCh. 3.5 - The Marble Players Four boys were playing marbles;...Ch. 3.5 - Whodunit? Daniel Kilraine was killed on a lonely...Ch. 3.5 - Prob. 59PSCh. 3.5 - Prob. 60PSCh. 3.6 - Prob. 1PSCh. 3.6 - Prob. 2PSCh. 3.6 - Prob. 3PSCh. 3.6 - Prob. 4PSCh. 3.6 - Prob. 5PSCh. 3.6 - Prob. 6PSCh. 3.6 - Prob. 7PSCh. 3.6 - Prob. 8PSCh. 3.6 - Prob. 9PSCh. 3.6 - Prob. 10PSCh. 3.6 - Prob. 11PSCh. 3.6 - Prob. 12PSCh. 3.6 - Prob. 13PSCh. 3.6 - Prob. 14PSCh. 3.6 - Prob. 15PSCh. 3.6 - Prob. 16PSCh. 3.6 - Prob. 17PSCh. 3.6 - Prob. 18PSCh. 3.6 - Prob. 19PSCh. 3.6 - Prob. 20PSCh. 3.6 - Prob. 21PSCh. 3.6 - Using both switches and simplified gates, design a...Ch. 3.6 - Prob. 23PSCh. 3.6 - Prob. 24PSCh. 3.6 - Prob. 25PSCh. 3.6 - Prob. 26PSCh. 3.6 - Prob. 27PSCh. 3.6 - Prob. 28PSCh. 3.6 - Prob. 29PSCh. 3.6 - Prob. 30PSCh. 3.6 - Prob. 31PSCh. 3.6 - Prob. 32PSCh. 3.6 - Prob. 33PSCh. 3.6 - Prob. 34PSCh. 3.6 - Prob. 35PSCh. 3.6 - Prob. 36PSCh. 3.6 - Prob. 37PSCh. 3.6 - Prob. 38PSCh. 3.6 - Prob. 39PSCh. 3.6 - Prob. 40PSCh. 3.6 - Prob. 41PSCh. 3.6 - Prob. 42PSCh. 3.6 - Prob. 43PSCh. 3.6 - Prob. 44PSCh. 3.6 - Prob. 45PSCh. 3.6 - Prob. 46PSCh. 3.6 - Prob. 47PSCh. 3.6 - Prob. 48PSCh. 3.6 - Prob. 49PSCh. 3.6 - Write a truth table for the thermostat described...Ch. 3.6 - Prob. 51PSCh. 3.6 - Prob. 52PSCh. 3.6 - Prob. 53PSCh. 3.6 - Prob. 54PSCh. 3.6 - Prob. 55PSCh. 3.6 - Prob. 56PSCh. 3.6 - Prob. 57PSCh. 3.6 - Prob. 58PSCh. 3.6 - Prob. 59PSCh. 3.6 - Prob. 60PSCh. 3.CR - Prob. 1PSCh. 3.CR - Prob. 2PSCh. 3.CR - Prob. 3PSCh. 3.CR - Prob. 4PSCh. 3.CR - Construct truth tables for the statements in...Ch. 3.CR - Prob. 6PSCh. 3.CR - Prob. 7PSCh. 3.CR - Prob. 8PSCh. 3.CR - Prob. 9PSCh. 3.CR - Prob. 10PSCh. 3.CR - Write the negation of each of the following...Ch. 3.CR - Prob. 12PSCh. 3.CR - Prob. 13PSCh. 3.CR - Consider this statement: All computers are...Ch. 3.CR - Prob. 15PSCh. 3.CR - Prob. 16PSCh. 3.CR - Prob. 17PSCh. 3.CR - Prob. 18PSCh. 3.CR - Prob. 19PSCh. 3.CR - Table Puzzle The mathematics department of a very...
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