Secondary +
Post Secondary +
Ask Question
POST SECONDARY
ADVANCED MATH
DISCRETE MATH
Secondary
Post Secondary
Algebra
Statistics and Probability
Calculus and Analysis
Advanced Math
Discrete math
Upper Level Math
Differential equations
Didn’t find what you are looking for?
Ask question
Discrete math Answers
Discrete math
asked 2021-03-11
is this true or false
\({6, {a, b, c}, {b, c, 8}} = {6, {a, b, c}, {b, c, 8}, ∅}\)
Discrete math
asked 2021-03-11
Factor
\(\displaystyle{f{{\left({x}\right)}}}={2}{x}^{{{3}}}+{\left(-{3}-{2}{i}\right)}{x}^{{{2}}}+{\left(-{3}-{i}\right)}{x}+{\left({2}+{i}\right)}\)
into linear factors if
\(\displaystyle{2}+{i}\)
is a zero of the function.
Discrete math
asked 2021-03-11
The following problem is solved by using factors and multiples and features the strategies of guessing and checking and making an organized list.
Problem
A factory uses machines to sort cards into piles. On one occasion a machine operator obtained the following curious result.
When a box of cards was sorted into 7 equal groups, there were 6 cards left over, when the box of cards was sorted into 5 equal groups, there were 4 left over, and when it was sorted into 3 equal groups, there were 2 left.
If the machine cannot sort more than 200 cards at a time, how many cards were in the box?
Discrete math
asked 2021-03-11
Give an example of a poset which has exactly one maximal element but does not have a greatest element.
Discrete math
asked 2021-03-02
Using cardinatility of sets in discrete mathematics the value of N is real numbers Currently using elements of discrete mathematics by Richard Hammack chapter 18 Let A be a collection of sets such that X in A if and only if
\(X \supset N\ \text{and} |X| = n\)
for some n in N. Prove that
\(|A| = |N|\)
.
Discrete math
asked 2021-02-27
Which of the following are true statements?
a:2in{1,2,3}
b:{2}in{1,2,3}
c:2sube{1,2,3}
d:{2}sube{1,2,3}
e:{2}sube{{1},{2}}
f:{2}in{{1},{2}}
Discrete math
asked 2021-02-22
prove or disprove the product of two distinct irrational numbers is irrational
Discrete math
asked 2021-02-22
Discrete mathematics cardinality using Richard Hammack's Elements of Discrete mathematics chapter 18 Prove that countable union of countable sets is countable.
Discrete math
asked 2021-02-19
For the following questions you must use the rules of logic (Don’t use truth tables)
a) Show that (
\(\displaystyle{p}\leftrightarrow{q}\)
) and (
\(\displaystyle\neg{p}\leftrightarrow\neg{q}\)
) are logically equivalent.
b) Show that not (
\(\displaystyle{p}\oplus{q}\)
) and (
\(\displaystyle{p}\leftrightarrow{q}\)
) are logically equivalent.
Discrete math
asked 2021-02-12
A building code requires one square foot (sq ft) of net-free vent area (NFVA) for every 300 sq ft of attic space. How many square feet of NFVA are required for a
\(\displaystyle{1620}-{s}{q}-{f}{t}\)
attic?
Discrete math
asked 2021-02-09
Suppose n is an integer. Using the definitions of even and odd, prove that n is odd if and only if 3n+1 is even.
Discrete math
asked 2021-02-09
Consider the following recurrence relation:
\(\displaystyle{a}_{{n}}={2}\cdot{a}_{{{n}-{1}}}-{3}\ \text{with}\ {a}_{{1}}={5}\)
Discrete math
asked 2021-02-08
in DISCRETE MATHEMATICS & APPLICATIONS Write a note about application of mathematical induction in daily life. Give two examples.
Discrete math
asked 2021-02-02
List all the steps used to search for 9 in the sequence
\(\displaystyle{1},{3},{4},{5},{6},{8},{9},{11}\)
using linear search
Discrete math
asked 2021-02-01
Prove or disaprove that if a|bc, where a, b, and c are positive integers and
\(\displaystyle{a}≠{0}{a}\)
, then a|b or a|c.
Discrete math
asked 2021-01-31
Use symbols to write the logical form of the following arguments. If valid, iden- tify the rule of inference that guarantees its validity. Otherwise, state whether the converse or the inverse error has been made. If you study hard for your discrete math final you will get an A. Jane got an A on her discrete math final. ‘Therefore, Jane must have studied hard.
Discrete math
asked 2021-01-27
Two-digit numbers are formed, with replacement, form the digits 0 through 9.
How many two-digit even numbers are possible?
Discrete math
asked 2021-01-27
Margo's dad offers to give her
\(\displaystyle{5}¢\)
on Sunday, Then for each day of the week, he offers to give her 5 times the amount from the previous day. How much will he give her on Saturday? Write an expression to show how much Margo's dad gives her on Saturday.
Discrete math
asked 2021-01-19
For each positive integer n, find the number of positive integers that are less than 210n which are odd multiples of three that are not multiples of five and are not multiples of seven. Justify your answer, which should be in terms of n.
Discrete math
asked 2021-01-19
Let
\(\displaystyle{F}_{{i}}\)
be in the
\(\displaystyle{i}^{{{t}{h}}}\)
Fibonacc number, and let n be ary positive eteger
\(\displaystyle\ge{3}\)
Prove that
\(\displaystyle{F}_{{n}}=\frac{1}{{4}}{\left({F}_{{{n}-{2}}}+{F}_{{n}}+{F}_{{{n}+{2}}}\right)}\)
1
2
...