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# Curve-fit to resonant FRF data
## Introduction
I am re-reviewing the bible-like book “Introduction to Modal Analysis,” which every Japanese vibration engineer has read at least once.
I would like to explain what I have learned in the re-review, showing the MATLAB code. This time, we will review from section 6.2.4,... | {} |
Could LIGO discovery be due to e.g. earthquakes or have a terrestrial source? [duplicate]
This question already has an answer here:
I mean, could it have been earthquakes or anything else?
marked as duplicate by Kyle Kanos, user36790, Bill N, ACuriousMind♦, GertFeb 13 '16 at 20:26
• Coincidence of signals for one..... | {} |
# Remote access/administrator with ability to make remote screen static
I have used TightVNC for a long time now.
I want to be able to access/work-on my remote computer (rm1) from my present computer (rm2) BUT with my remote computer locked.
Why? Nasty siblings, meh :P
All I want is that people who are in the room ... | {} |
### Contact
fparodi@pennmedicine.upenn.edu
### Bio
Originally from Buenos Aires, Argentina, Felipe studied Neuroscience and Economics at the University of Miami from 2015-2019. As an undergraduate, Felipe conducted research on neurolinguistic pain modulation in the Social and Cultural Neuroscience Lab. Following gra... | {} |
# Determining whether a space is really three or two dimensional? [closed]
A space purports to be three dimensional with the metric
$$dl^2=dx^2+dy^2+dz^2-\left(\frac{3}{13}dx+\frac{4}{13}dy+\frac{12}{13}dz\right)^2$$
How can I show that it actually represents a two dimensional space?
I tried diagonalizing it to see... | {} |
# A possible more principled approach to generation and simplification in hypothesis
Currently the way generation and simplification in hypothesis work are very ad hoc and undisciplined. The API is spread across various places, and the actual behaviour is very under-specified.
There are two perations exposed, produce... | {} |
# Multiplicative Group of Reduced Residues/Examples/Modulo 8
## Example of Multiplicative Group of Reduced Residues
Consider the reduced residue system $\Z'_8$ modulo $8$ under modulo multiplication:
$\Z'_8 = \set {\eqclass 1 8, \eqclass 3 8, \eqclass 5 8, \eqclass 7 8}$
$\struct {\Z'_8, \times_8}$ is the multiplic... | {} |
# Product rule in calculus
## Statement
The derivative of a product $g(x) * j(x)$ is $g'(x) * j(x) + g(x) * j'(x)$.
$$\tfrac{d}{dx}\bigg(g(x) * j(x)\bigg) = g'(x) * j(x) + g(x) * j'(x)$$
## Proof
Define function $f$.
$$f(x) = g(x) * j(x)$$
$$f'(x) = \lim_{h \to 0}\left(\frac{f(x + h) - f(x)}{h}\right)$$
$$f'(x)... | {} |
# Recent Posts
312 posts found
posted over 1 year ago distler 72 posts Forum: Heterotic Beast – Topic: MySQL Gotcha If you’re going to use Heterotic Beast in production, you need to be running MySQL 5.5.3 or later, and follow the advice in this blog post. Otherwise, the lack of support for Unicode will come back to ... | {} |
# geometry
## Classes
### Primitives
Primitive Base class for geometric primitives. Bezier A Bezier curve. Circle A circle is defined by a plane and a radius. Ellipse A ellipse is defined by a plane and a major. Frame A frame is defined by a base point and two orthonormal base vectors. Line A line is defined by two... | {} |
We have previously found that the gills of crucian carp Carassius carassius living in normoxic (aerated) water lack protruding lamellae,the primary site of O2 uptake in fish, and that exposing them to hypoxia increases the respiratory surface area of the gills ∼7.5-fold. We here examine whether this morphological chang... | {} |
Browse Questions
Thermodynamics
# 1 mole of ideal gas is allowed to expand isothermally from the initial volume of 1L to 10L, the value of $\Delta U$ for the process is $(R = 2\: cal/Kmol)$
$\begin {array} {1 1} (A)\;163.7\: cal & \quad (B)\;1382.1\: cal \\ (C)\;9\: L-atm & \quad (D)\;Zero \end {array}$
Can you answ... | {} |
# Magrathea 2.0 - Building Mountains
With the big crash of the universal economy also the demand for custom made planets plunged. The Magratheans had to look after more steady revenues also from a broader class of customers. Therefore, they invented the have-your-own chain of mountain (or short havoc-o-mountains) for ... | {} |
Algebraic & Geometric Topology
An infinite presentation for the mapping class group of a nonorientable surface
Genki Omori
Abstract
We give an infinite presentation for the mapping class group of a nonorientable surface. The generating set consists of all Dehn twists and all crosscap pushing maps along simple loops... | {} |
SSC (English Medium) Class 8Maharashtra State Board
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# Some Measures Are Given in the Adjacent Figure, Find the Area of ☐Abcd. - SSC (English Medium) Class 8 - Mathematics
ConceptArea of a Triangle by Heron’S Formula
#### Question
Some measures are given in the adjacent figure, find the area of ☐ABCD.
#### So... | {} |
Why do metals conduct electricity?
1 Answer
May 25, 2018
Low resistance, free electrons, efficient... See more below.
Explanation:
Metals conduct electricity well because they have a very low resistance that decreases the difficulty that there is for the current to pass through them (around 0.0001 ohms). They also ... | {} |
I do not fear any conspiracy from any nook & corner. I am simply taking my time and my space to stage the inevitable confrontation in the frozen face of the industry and geopolitics tycoons. this think is complicated and confusing, its Free Power year now I’m struggling to build this motor after work hours, I tried to ... | {} |
Search Lawyer Browse Lawyer by Country, State (US & Canada) or Specialization
# general and special damages
A classification of *damages awarded for a tort or a breach of contract, the meaning of which varies according to the context.
1. General damages are given for losses that the law will presume are the natural a... | {} |
Modeling observations of GRB 180720B: From radio to GeV gamma-rays
Modeling observations of GRB 180720B: From radio to GeV gamma-rays
N. Fraija1$\dagger$1$\dagger$affiliationmark: , S. Dichiara22affiliationmark: 33affiliationmark: , A.C. Caligula do E. S. Pedreira11affiliationmark: , A. Galvan-Gamez11affiliationmar... | {} |
# semi supervised learning python
Naïve Bayes 4. data to some degree. 193-216, [2] Olivier Delalleau, Yoshua Bengio, Nicolas Le Roux. some distributions P(X,Y) unlabeled data are non-informative while supervised learning is an easy task. Prior work on semi-supervised deep learning for image classification is divided in... | {} |
So multiplying by 1 is the identity property of multiplication. Which equation illustrates the Commutative Property of Multiplication? He did not apply the distributive property correctly for 4(1 + 3i). Return to Top. Question: Name the property the equation illustrates. Choose the correct option: 1) Which equation sho... | {} |
# Why does admixture create LD between unlinked loci?
Admixture generates linkage disequilibrium between loci, even those that are unlinked (i.e. segregate independently or reside on different chromosomes). A lot of my PhD was spent thinking about admixture and admixture LD gave me some grief. Recently I went back to ... | {} |
## Politics
People are interpreting yesterday’s “Operation Gringo” post — and Andrew’s follow-up — in a lot of different ways, which is perfectly fine since they come to fairly nuanced conclusions. But the most salient point is probably this one: there is a good argument that Republicans should be giving up on Nevada,... | {} |
# How does knitr's cache mechanism check whether to run a chunk or not?
I am writing a document in knitr and Latex and having trouble with the caching mechanism. Specifically, I have the problem that I write multiple data frames into CSV files to read them in using pgfplotstable later on. However, knitr's caching mech... | {} |
# Tahir Hassan's Blog
My Technical Notes
## Thursday, 25 August 2011
### Common Text Operations in Emacs
#### Deleting text
The two 'pure' deletion methods are using backspace or delete keys. The other way is to cut the text using the below method, regardless of the fact that it copies it to the clipboard.
#### C... | {} |
## Archive for the ‘hacking’ Category
### Installing OpenSuSE 13.1 on an Lenovo Ideapad S10-3t
Monday, June 9th, 2014
I tried to install the most recent OpenSuSE image I received when I attended the OpenSuSE Conference. We were given pendrives with a live image so I was interested how smooth the OpenSuSE installatio... | {} |
# backtesting a 5% quantile model of a discrete value random variable?
If a random variable is discrete, and we are interested in its quantile value, how to define a proper back testing procedure?
For example, the underlying variable with a discrete value is
$$d(\mbox{account}) = \mbox{PaymentDate} - \mbox{BillingDa... | {} |
2015
04-14
# The order of a Tree
As we know,the shape of a binary search tree is greatly related to the order of keys we insert. To be precisely:
1. insert a key k to a empty tree, then the tree become a tree with
only one node;
2. insert a key k to a nonempty tree, if k is less than the root ,insert
it to the left... | {} |
ATAC seq density calculation
This paper Fig2b
b Changes of chromatin accessibility in AMD (n = 14) relative to normal (n = 11) in all retina samples. Each dot represents one ATAC-Seq peak. Blue line in the left panel indicates average fold changes of peaks with the same ATAC-Seq intensity. The percentage of reduced p... | {} |
×
# Turbo C++ vs. g++(4.8.1)
0 I have learnt programming in Turbo C++ IDE and now, when i submit my code, the compiler rejects it. Are the codes written compatible for turbo C++ IDE valid in g++(4.8.1) ? Is there something i can do to be able to take part in the competitions successfully?? asked 23 May '14, 15:36 1●... | {} |
K Prime Factorization of Knots. - Definition & Examples, Free Online Accounting Courses with a Certificate, Tech and Engineering - Questions & Answers, Health and Medicine - Questions & Answers. Brute approach: Test all integers less than n until a divisor is found. Unfortunately, the page you were trying to find does ... | {} |
# Weak problem formulation for PDE and boundary conditions
Consider the following example: $$- \Delta u = f \mbox{ in } \Omega,$$ $$u = 0 \mbox{ on } \Gamma,$$ Here $\Gamma$ is boundary of $\Omega$. To produce weak formulation we multiply by arbitrary $v$ from $H^1(\Omega)$, integrate over $\Omega$ and apply integrati... | {} |
Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles an... | {} |
# Gluing along boundary of manifold
Let $$S_1, S_2$$ be two topological manifolds without boundary and let $$D_1,D_2$$ be two disks embedded in $$S_1$$ and $$S_2$$ respectively. Define $$X_i:=S_i\setminus\text{int}(D_i)$$. Let $$Y$$ be the space by gluing $$\partial D_1$$ to $$\partial D_2$$. I want to show that $$Y$$... | {} |
# Escaping a dying planet
Imagine that one day in the not-too-distant future, our scientists discover that our world is dying. It doesn't matter how this is happening, maybe magic or unstable core or Gaia herself has finally had enough of our sh*t, but the important thing is that it is happening, and soon.
Our only h... | {} |
# Happy Pi Day 2013
It’s March 14 (3.14) and its Pi Day.
Pi Day is an annual celebration of $\pi$ the most popular mathematical constant. Larry Shaw of San Francisco Exploratorium led the first large celebration of Pi Day in 1988, and since then it has spread all over the world.
Pi Pie (via Wikipedia)
To know more... | {} |
Gauge/Gravity Duality 2015
Europe/Rome
The Galileo Galilei Institute for Theoretical Physics (GGI)
The Galileo Galilei Institute for Theoretical Physics (GGI)
Arcetri, Florence
Participants
• Achilleas Passias
• alberto zaffaroni
• Aldo Lorenzo Cotrone
• Alessandro Tomasiello
• Alex Buchel
• Alfonso Ballon-Bayona
• ... | {} |
## Friday, May 18, 2012
### Batch-processing data files in a directory tree with Matlab
You may find the following code useful to process data with Matlab in a batch fashion. This example processes all the PNG files within the first level of directories that hang under the current directory, that additionaly have "no... | {} |
Hardcover | Out of Print | 360 pp. | 6 x 9 in | 5 illus. | May 2005 | ISBN: 9780262201568
Paperback | $32.00 X | £26.95 | 360 pp. | 6 x 9 in | 5 illus. | January 2007 | ISBN: 9780262701198 eBook |$22.00 X | January 2007 | ISBN: 9780262297073
## Making Parents
The Ontological Choreography of Reproductive Technologies
... | {} |
# 3. The while Statement¶
There is another Python statement that can also be used for iteration. It is called the while statement or a while loop. The while statement provides a much more general mechanism for iterating. Similar to the if statement, it uses a boolean expression to control the flow of execution. The bo... | {} |
chapter 14
It was shown in Chapter 13 that, assuming Martin’s Axiom (MA), there exists an injective absolutely nonmeasurable function f : R → R $f : \mathbf{R} \rightarrow \mathbf{R}$ . In other words, it was demonstrated therein that some functions f acting from R into R are extremely bad from the measure-theoretical... | {} |
# r plot lda decision boundary
plot() for class "lda". I wonder if anybody can offer any help on this topic? If abbrev > 0 The basics of Support Vector Machines and how it works are best understood with a simple example. Can anyone help me with that? Any advice on what I am doing wrong here would be much appreciated: ... | {} |
# Happy Numbers make Happy Programmers ! :-)
Here is one question which one of my students, Vedant Sahai asked me. It appeared in his computer subject exam of his recent ICSE X exam (Mumbai):
write a program to accept a number from the user, and check if the number is a happy number or not; and the program has to dis... | {} |
# pathfinder blood money abuse
Power of Blood: At 3rd level, a blood samurai must choose one sorcerer bloodline from any of the bloodlines listed in the Core Rulebook, Advance Players Guide, Ultimate Magic, or any other Pathfinder source. Nor can you do so with greater restoration, which has a casting time of 3 rounds... | {} |
# Article
Full entry | PDF (1.1 MB)
Keywords:
times to system failure; cold-standby redundant system
Summary:
A cold-standby redundant sytem with two identical units and one repair facility is considered. Units can be in three states: good $(I)$, degraded $(II)$, and failed $(III)$. It is supposed that only the foll... | {} |
# My wife wants a 4th baby, but I don't
My wife wants a 4th baby, but I don't.
We have been talking about it for the last few days (talking strongly).
I have raised points such as:
• We will get less time to spend with our current kids.
• The age gap between the first and the last will be too wide.
• It will cost m... | {} |
Day: September 3, 2021
Microsoft is just using Linux to make the moat around Windows deeper
I’ve also slowly become convinced of something else. Elegant though they may be, grand, over-arching theories of human-computer interactions are just not very useful. The devil is in the details, and accounting for the quirky ... | {} |
## anonymous 4 years ago 2^(x+1)=3^x Help please. I got it down to (X+1)ln2=xln3 But now don't know what to do
1. anonymous
solve, treating $$\ln(2)$$ and $$\ln(3)$$ as constants
2. anonymous
$(x+1)\ln(2)=x\ln(3)$ multiply out on the left get $\ln(2)x+\ln(2)=\ln(3)x$ put all term with $$x$$ on the right get $\ln(2)... | {} |
more beautiful for having been broken director's cut
This article discusses the recent transcendental techniques used in the proofs of the following three conjectures. Click and Collect from your local Waterstones … (AM-106), Volume 106 - Ebook written by Phillip A. Griffiths. Introduction. Read reviews from world’s l... | {} |
# Weyl Character Rings¶
class sage.combinat.root_system.weyl_characters.WeightRing(parent, prefix)
The weight ring, which is the group algebra over a weight lattice.
A Weyl character may be regarded as an element of the weight ring. In fact, an element of the weight ring is an element of the weyl character ring if a... | {} |
Contents
# Strategy Library
### Abstract
In this research, We investigate two pairs trading methods and compare the result. Pairs trading involves in investigating the dependence structure between two highly correlated assets. With the assumption that mean reversion will occur, long or short positions are entered in... | {} |
# Glossary
Bernoulli distribution
a named random variables used for binary outcomes; $1$ usually denotes the level of interest
categorical variable
a variable in a dataset that takes on not-mathable values
dataframe
a two dimensional data structure in the programming language R in which each row represents a new obser... | {} |
# Understanding an identity for least squares regression line gradient
In section 2.2 of this paper, Gelman and Park present the following identity for the gradient of the least squares line through a set of 2D points:
...we recall a simple algebraic identity that expresses the least-squares regression of $$y$$ on $$... | {} |
# Devivativing problems
1. Nov 3, 2004
### danne89
Hi. I can't get what I'm doing wrong here. If somebody points that out, I'm really gratefull.
$$u = (6 + 2x^2)^3$$
$$d(u) = 3(6+2x^2)^2 d(6+2x^2)=3(6+2x^2)^2 d(6) + d(2x^2) = [3(6+2x^2)^2 * 0 + 4x]dx = 4xdx$$
Then I want to draw a tangent on the point, which acctua... | {} |
## College Algebra (10th Edition)
Published by Pearson
# Chapter R - Section R.5 - Factoring Polynomials - R.5 Assess Your Understanding - Page 57: 68
#### Answer
$(3x-4)(x-2)$
#### Work Step by Step
To factor a trinomial in the form x2+bx+c, we must find two numbers whose product is c and whose sum is b. We then... | {} |
## Version 1.0.0
June 2020
Recent Changes
HSL_MA85 uses a direct method to solve large-scale diagonally-weighted linear least squares problems. Given an $$m \times n$$ ($$m \ge n$$) matrix $${A} = \{ a_{ij} \}$$, an $$m \times m$$ diagonal matrix of weights $$W$$, and an $$m-$$vector $$b$$, HSL_MA85 solves either th... | {} |
12 CFR § 324.145 - Recognition of credit risk mitigants for securitization exposures.
§ 324.145 Recognition of credit risk mitigants for securitization exposures.
(a) General. An originating FDIC-supervised institution that has obtained a credit risk mitigant to hedge its securitization exposure to a synthetic or tra... | {} |
# GMAT Math Questions | Geometry #12
#### Length of the diagonal of a square | Rates | Speed Distance Time
This GMAT quant problem solving practice question is from Mensuration (Solid Geometry): Concept: Length of the diagonal of a square and elementary speed, distance, and time concepts. A medium difficulty GMAT 650... | {} |
0000084282 00000 n Question: Compute the reflexive closure and then the transitive closure of the relation below. 0000003043 00000 n The final matrix is the Boolean type. Finally, the concepts of reflexive, symmetric and transitive closure are presented and show that construction of transitive closure in soft set satis... | {} |
# Configuring apps with “.env” files
## Syntactic sugar for compiled code
### Assumed audience:
People who run code in multiple places
This is mostly python tips for now, but I want this because it is cross-platform potentially. A part of a configuring ML.
There are many, many python tools to load environment vari... | {} |
# Martha Manufacturing produces a single product that sells for $80. Variable costs per unit equal... 1 answer below » Martha Manufacturing produces a single product that sells for$80. Variable costs per unit equal $32. The company expects total fixed costs to be$72,000 for the next month at the projected s... | {} |
# Math Help - Differentiation Problem
1. ## Differentiation Problem
Can anyone help me out with this one problem please, didn't really learn this type of problem yet.
find a and b such that f is differentiable everywhere
f(x)= ax^3, x=less than or equal to 2
x^2+b, x=greater than 2
thanks
2. Originally Posted by ... | {} |
Since 18 of December 2019 conferences.iaea.org uses Nucleus credentials. Visit our help pages for information on how to Register and Sign-in using Nucleus.
# 28th IAEA Fusion Energy Conference (FEC 2020)
10-15 May 2021
Nice, France
Europe/Vienna timezone
The Conference will be held virtually from 10-15 May 2021
## [... | {} |
# How do you solve q/24=1/6?
Jan 9, 2017
See explanation.
#### Explanation:
To solve this equation you have to multiply both sides by $24$:
$\frac{q}{24} = \frac{1}{6}$
$q = 24 \cdot \frac{1}{6}$
$q = \frac{24}{6}$
$q = 4$ | {} |
# Maximum Value of Trig Expression
What is the general method for finding the maximum and minimum value of a trig expression without the use of a calculator. For example, given the expression :
$$\sin(3x) + 2 \cos(3x) \text{ where } - \infty < x < \infty$$
How would one go about finding the maximum and minimum value... | {} |
# Steklov problems
in the theory of orthogonal polynomials
Problems in which the asymptotic properties of orthogonal polynomials are studied in dependence on the properties and, particularly, on the singularities, of the weight function and the domain of orthogonality.
In the study of the orthogonal polynomials $\{P... | {} |
# B-Algebra is Quasigroup
## Theorem
Let $\left({X, \circ}\right)$ be a $B$-algebra.
Then $\left({X, \circ}\right)$ is a quasigroup.
## Proof
By the definition of a quasigroup it must be shown that $\forall x \in X$ the left and right regular representations $\lambda_x$ and $\rho_x$ are permutations on $X$.
As $\... | {} |
# Find number of positive integer solutions
Find number of positive integer solutions $(x,y,z)$ for the following equation:
$19x + 11y + 8z = 240$
I divided the equation by $8$ and then tried to equate remainders. It yields that $3(x + y) = 8k$ for some constant $k$ or $x + y$ is a multiple of 8. Can't choose which ... | {} |
# Prove the following trigonometric identity.
$$\frac{\sin x - \cos x +1}{\sin x + \cos x -1}=\frac{\sin x +1}{\cos x}$$
I tried substituting $\sin^2x+\cos^2x = 1$ but I cannot solve it.
The above method is really verifying and always quick. Another method to arrive at the answer is by rationalising denominator (mai... | {} |
# Tag Info
18
Well you have that $$y'=y''=y^{(3)}\cdots$$ only function that is a derivative of itself is $$ae^{x}$$ for some $a$ so $$y'=ae^x$$ and $$y=y'-1=ae^x-1$$ And since $y(0)=1$ than $a-1=1$ so $a=2$
12
My favorite paper about $x^x$ is The $x^x$ Spindle, which appeared in Mathematics Magazine back in 1996. ... | {} |
## The Smallest Eigenvalues of a Graph Laplacian
Given a graph $G = (V, E)$, its adjacency matrix $A$ contains an entry at $A_{ij}$ if vertices $i$ and $j$ have an edge between them. The degree matrix $D$ contains the degree of each vertex along its diagonal.
The graph laplacian of $G$ is given by $D - A$.
Several p... | {} |
# Gershgorin Circle Theorem
## Theorem
Let $n$ be a positive integer.
Let $A = \left({a_{i j} }\right)$ be a complex square matrix of order $n$.
Let $\lambda$ be an eigenvalue of $A$.
Then there exists $i \in \left\{ {1, 2, \ldots, n}\right\}$ such that:
$\lambda \in \mathbb D \left({a_{i i}, R_i}\right)$
where:... | {} |
### Exercise condition:
3
Calculate the average number of manufactured products, if they had produced day after day $$15; 23; 19; 18; 25; 20; 13$$ units of products.
On average, manufactured products per day is units. | {} |
Select Page
Try this problem from ISI-MSQMS 2018 which involves the concept of Real numbers, sequence and series and Definite integral.
## DEFINITE INTEGRAL | ISI 2018| MSQMS | PART A | PROBLEM 22
Let $I=\int_{0}^{1} \frac{\sin x}{\sqrt{x}} d x$ and $J=\int_{0}^{1} \frac{\cos x}{\sqrt{x}} d x,$ then which of the fol... | {} |
I pretended the whole year that I understood Baye's theorem but in reality, I have no idea what the hell it is.
I think people overcomplicate this.
It's way to reverse our understanding of which thing we take as given and which we then consider to be the probability.
It does require that we know a lot of things to ... | {} |
Address 400 W Main Cir, Filer, ID 83328 (208) 326-3700 http://techteamsupport.com
least mean square error image difference matlab Rogerson, Idaho
Estimators with the smallest total variation may produce biased estimates: S n + 1 2 {\displaystyle S_{n+1}^{2}} typically underestimates σ2 by 2 n σ 2 {\displaystyle {\fr... | {} |
# Proof of trace of density matrix in pure/mixed states
1. Apr 27, 2010
### barnflakes
Can someone help me prove that $tr(\rho^2) \leq 1$ ?
Using that $$\rho = \sum_i p_i | \psi_i \rangle \langle \psi_i |$$
$$\rho^2 = \sum_i p_i^2 | \psi_i \rangle \langle \psi_i |$$
$$tr(\rho^2) = \sum_{i, j} p_i^2 \langle j | \p... | {} |
# TXT to SRT Converter
###### Updated: Jan 6, 2019
TXT to SRT converter is used to convert subtitles from Text to SRT format. Language conversion is also supported between English, French, Germal, Italian, Japanese, etc. Simply click on the Upload button below, select your text subtitle file and hit the Convert butto... | {} |
# How do you translate "the product of triple a number and five" into a mathematical expression?
Dec 30, 2015
#### Answer:
Product means multiply ...
#### Explanation:
$3 \left(x\right) \times 5$
Hope that helped | {} |
1:22 AM
0
Determine whether there exists a function $f:\mathbb{R}\rightarrow\mathbb{R}$ such that $$f\big(x^3+x\big)\le x\le\big(f(x)\big)^3+f(x)$$ for all $x\in\mathbb{R}$. Source: Math Excalibur Volume 22 No. 4 Page 3 Problem 536 rephrased
1:46 AM
1
Once again, you have angered the Emperor, and she has imprisoned ... | {} |
## Pacific Journal of Mathematics
### Properties of solutions of $n{\rm th}$ order linear differential equations.
Thomas L. Sherman
#### Article information
Source
Pacific J. Math., Volume 15, Number 3 (1965), 1045-1060.
Dates
First available in Project Euclid: 13 December 2004
https://projecteuclid.org/euclid.pj... | {} |
# How do you find the square root of 15?
Jun 26, 2016
$\sqrt{15}$ is not simplifiable.
We can find rational approximations $\frac{31}{8}$, $\frac{244}{63}$
#### Explanation:
$15 = 3 \times 5$ has no square factors, so $\sqrt{15}$ cannot be simplified.
It is not expressible as a rational number. It is an irrationa... | {} |
Plot a circle with an edgecolor in Matplotlib
To plot a circle with an edgecolor in matplotlib, we can take the following Steps −
• Create a new figure or activate an existing figure using figure() method.
• Add a subplot method to the current axis.
• Create a circle instance using Circle() class with an edgecolor ... | {} |
[Tex/LaTex] LyX: why does figure-wrap-float overrun the page
floatslyxpositioningwrapfigure
I find that when I add figure wrap floats to LyX documents, often they will be placed poorly such that they overrun the bottom of the page. This is always accompanied by some of the text on the next page wrapping around nothin... | {} |
Age and relativity [closed]
This is a question, where I start with some assertions:
Try to consider the universe as a four-coordinate system, x,y,z,t where t is time and where we view a change in t as a change in position, and as a velocity in the same way as any other change in either of the other components of the ... | {} |
# Thread: Find the (trigonometric) limit
1. ## Find the (trigonometric) limit
How do I find the following limit?:
lim t --> 0 (tan 6t)/(sin 2t)
(The answer is 3 and I could also figure that out by plugging in t = 0.01 but I would like to know the legitimate way of doing this. My teacher taught us similar stuff but ... | {} |
# Uniform convergence and equicontinuity
Given a sequence of functions which is not uniformly convergent, can we deduce, that none of its subsequences is uniformly continous and therefore, by Arzela-Ascoli say that the family of function is not equicontinous?
I think it is true in the case that the limit function is ... | {} |
# zbMATH — the first resource for mathematics
Restricted tangent bundle on space curves. (English) Zbl 0859.14011
Teicher, Mina (ed.), Proceedings of the Hirzebruch 65 conference on algebraic geometry, Bar-Ilan University, Ramat Gan, Israel, May 2-7, 1993. Ramat-Gan: Bar-Ilan University, Isr. Math. Conf. Proc. 9, 283-... | {} |
# Electromagnetic Wave Equation
1. Oct 5, 2014
### rmjmu507
1. The problem statement, all variables and given/known data
Show that the solution $\textbf{E}=E(y,z)\textbf{n}\cos(\omega t-k_xx)$ substituted into the wave equation yields
$\frac{\partial^2 E(y,z)}{\partial y^2}+\frac{\partial^2 E(y,z)}{\partial z^2}=-k... | {} |
latex vector brackets
inside the brackets will increase the spacing between rows by a factor of 1.5. If you want matrices with round brackets, use [code ]\begin{pmatrix}\end{pmatrix}[/code]. A matrix in LaTeX can be generated with the help of a math environment for typesetting matrices. Refer to the external reference... | {} |
# Need help with thisss
###### Question:
need help with thisss
### What percent of 50 is 15
What percent of 50 is 15...
### Select the correct answer from each drop-down menu. How are evidence and counterexamples used in proofs? In a direct proof, evidence is used to . On the other hand, a counterexample is a sing... | {} |
Last edited by Kazragul
Friday, July 24, 2020 | History
12 edition of Differential and Integral Equations found in the catalog.
# Differential and Integral Equations
## by Peter Collins
Written in English
The Physical Object
Number of Pages386
ID Numbers
Open LibraryOL7400642M
ISBN 100198533829
ISBN 10978019853382... | {} |
# $f: \mathbb{R} \to \mathbb{R}$ that takes each value in $\mathbb{R}$ twice
Does there exist a continuous function $f: \mathbb{R} \to \mathbb{R}$ that takes each value in $\mathbb{R}$ exactly two times?
• I think by the Intermediate Value Theorem this isn't possible, but proof seems a little confusing. – Seth Mar 28... | {} |
# Reason for the obvious movement of a block
1. May 2, 2015
### mooncrater
1. The problem statement, all variables and given/known data
Consider the given system. It is obvious that the weight of the block will lead the system to move in the leftward direction. But the reason for that is not clear to me.
2. Relevant... | {} |
# Page:A Treatise on Electricity and Magnetism - Volume 1.djvu/206
$\begin{array}{ll} Q_{i} & =\mu^{i}-\frac{i(i-1)}{2.2}\mu^{i-2}\nu^{2}+\frac{i(i-1)(i-2)(i-3)}{2.2.4.4}\mu^{i-4}\nu^{4}-\mathrm{etc}.\\ \\ & \sum_{n}\left\{ (-1)^{n}\frac{|\underline{i}}{2^{2n}|\underline{n}\ |\underline{n}\ |\underline{i-2n}}\mu^{i-2... | {} |
Categories
# system of linear equations matrix conditions
To solve nonhomogeneous first order linear systems, we use the same technique as we applied to solve single linear nonhomogeneous equations. Section 2.3 Matrix Equations ¶ permalink Objectives. Developing an effective predator-prey system of differential equat... | {} |
# Outlook plug-in for Evernote, attachments
## Recommended Posts
I use the Outlook plug-in for Evernote, when an email has an attachment it is always placed at the end of the Evernote note that is created by the plug-in. is there a setting I can change that would place the attachment(s) at the beginning of the note?... | {} |
# How prove that $m_\alpha ^*(\mathcal C)\geq 1$ where $\mathcal C$ is the Cantor set, and $m_\alpha$ the Hausdorff measure.
Let $\mathcal C$ the Cantor set and $m_\alpha ^*$ the $\alpha$-Hausdorff measure with $\alpha =\frac{\ln(2)}{\ln(3)}$, i.e. $$m_\alpha ^*(E)=\lim_{\delta\to 0}\mathcal H_\alpha ^\delta(E)$$ wher... | {} |
In a previous installment of our Measuring series, we considered the question of measuring subsets of the natural numbers. We came up with a solution using a non-principal ultrafilter. This is an elegant solution, but it has some drawbacks. One of these is that, assuming we are assigning a measure of 1 to the entire se... | {} |
## CCC '10 J5 - Knight Hop
View as PDF
Points: 7
Time limit: 1.0s
Memory limit: 64M
Problem type
##### Canadian Computing Competition: 2010 Stage 1, Junior #5
Below is an chessboard on which we will designate square locations using the ordered pairs as indicated. For example, notice that piece is at position and pi... | {} |
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