Expert Help & Insights for Discrete Mathematics Answers

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Discrete math

Find the number of elements of the set
$P = {n ∣ n \in Z, 1 \leq n \leq 400, 3 \neg {∣} n$ and $7 \neg {∣} n$ and $13 \neg {∣} n}$ .

kuCAu 2021-08-11

Discrete Math
Show that if $a ∣ b$ then $- a ∣ b$ .

glamrockqueen7 2021-08-10

Given discrete math $A = [\begin{matrix} 1 & 1 & 1 \\ 1 & 0 & 1 \\ 1 & 1 \end{matrix}] B = [\begin{matrix} 1 & 1 & 0 \\ 1 & 1 & 1 \\ 1 & 0 & 0 \end{matrix}]$
Find A

preprekomW 2021-08-10

$F_{0}, F_{1}, F_{2} \dots$ is the Fibonacci sequence.
Prove that $F_{k + 1}^{2} - F_{k}^{2} = F_{k - 1} F_{k + 2},$ for all integers $k \geq 1$

aflacatn 2021-08-10

Critique the following "proof":
x>y
$x^{2} > y^{2}$
$x^{2} - y^{2} > 0$
(x + y)(x - y) > 0
x + y > 0
x > -y

geduiwelh 2021-08-10

This is for Discrete Math.
The formula for the Stirling number of second kind, the number of partitions of n objects into n-4 boxed is given by the formula
$\begin{matrix} n \\ 5 \end{matrix} + A \begin{matrix} n \\ 4 \end{matrix} \begin{matrix} n - 4 \\ 2 \end{matrix} + B \begin{matrix} n \\ 3 \end{matrix} \begin{matrix} n - 3 \\ 3 \end{matrix} + C \begin{matrix} n \\ 3 \end{matrix} \begin{matrix} n - 3 \\ 2 \end{matrix} \begin{matrix} n - 5 \\ 2 \end{matrix} + D \begin{matrix} n \\ 2 \end{matrix} \begin{matrix} n - 2 \\ 2 \end{matrix} \begin{matrix} n - 4 \\ 2 \end{matrix} \begin{matrix} n - 6 \\ 2 \end{matrix}$
What is $\frac{A + B + C}{D}$ ?
1) 46
2) 6
3) 48
4) 120
5) 24

Jaya Legge 2021-08-10

Prove that discrete math the following statement (if true) or provide a counterexample (if false): For all $n \geq 4, 2^{n} - 1$ is not a prime number.

Kyran Hudson 2021-08-09

Let consider the following algorithm: Polynomial evaluation
This algorithm evaluates the polynomial
$P (x) = \sum_{k = 0}^{n} c_{k} x^{n - k}$ At the point t.
Input: The sequence of coefficients $C_{0}, C_{1}, \dots, C_{n}$ , the value tandn
Output: p(t)
Procedure poly(c, n, t)
If n=0 then
Return $(c_{0})$
Return $(t : p o l y (c, n - 1, t) + c_{n})$
End poly
Let $b_{n}$ , be the number of multiplications required to compute p(t).
a) Find the recurrence relation and initial condition for the sequence ${b_{n}}$
b) Compute $b_{1}, b_{2} and b_{3}$ .
c) Solve the recurrence relation.

Annette Arroyo 2021-08-08

Restate each proposition in the form $p \to q$ .
A. Joey will pass the symbolic logic exam if he studies hard.
B. A sufficient condition for Katrina to take the algorithms course is that she pass discrete mathematics.
C. A necessary condition for Fernando to buy a computer is that he obtain $2000.
D. When better cars are built, Toyota will build them.
E. The program is readable only if it is well structured.

sibuzwaW 2021-08-08

Discrete Mathematics:
Find $\sum_{i = 1}^{i = 4} \prod_{j = 2}^{j = 3} (i + ⌈ j + 0.5 ⌉)$

Caelan 2021-08-07

Prove that for sets in discrete math A and B, if A $\subseteq$ B then P(A) $\subseteq$ P(B)

Reggie 2021-08-07

Define discrete math?

Haven 2021-08-06

Let R be a relation on Z defined by (x.y) $\in$ R if and only if 5(x-y)=0. Formally state what it means for R to be a symmetric relation. Is R an equivalence relation? If so, prove it discrete math and if not, explain why it is not.

rocedwrp 2021-08-06

Let A be the set of students in your discrete math class and B is the set of students at Arizona majoring in computer science.
a) Describe the students in the set $\frac{B}{A} ?$
b) Which set represents the students majoring in computer science in your discrete math class?

Dillard 2021-08-06

Page Turner loves discrete mathematics. She has 8 "graph theory" books, 6 books about combinatorics, and 4 "set theory" books.
How many ways can she place her discrete mathematics books on the same shelf in a row if:
1) there are no restrictions.
2) graph theory books are next to each other but the others could be anywhere on the shelf.
3) books are organized by their topic (same kinds are next to each other).

Ayaana Buck 2021-08-06

Function f and g are defined for $x \in R$ by $f : x \to 2 x + 5$ and $g :\to \frac{8 x - 2}{2}$
Find x such that $(f o g) (x) = 9$

Marvin Mccormick 2021-08-06

1)Solve the reccurence relation $T (n) = T (n - 1 + c_{2})$
With the initial conditions $t (0) = c_{1}$

ankarskogC 2021-08-06

Discrete Mathematics:
Show that the function $f (x) = x^{7} + 1$ is invertible from R to R.

sagnuhh 2021-08-06

To determine: A superset of uncountable set is uncountable. A is a superset of B if $B \subseteq A$

Carol Gates 2021-08-05

There are 60 people taking the Discrete Mathematics classthey have a distinct roll numbers from 1 to 60. Now if they pick arbitrarily 31 students.
Claim: there exists two students with roll number a and b such that b is divisible by a.

Dealing with discrete Math is an interesting subject because discrete Math equations can be encountered basically anywhere from scheduling of sports games and live shows to education where each person is examined online. It is a reason why discrete math questions that we have collected for you are aimed at solutions that go beyond equations to provide you with the answers that will help you understand the concept. Still, discrete Math equations are explained as well by turning to problems in computer science, programming, software, and cryptography among other interesting subjects like software and mobile apps development.

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