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# Math Help - divide by 3?
1. ## divide by 3?
hi folks,
I hope this is the right place to post this! I have no idea how to proceeed with the following question:
Show that for all positive integral values of n
[HTML]7 <sup>n</sup> + 2 <sup>2n+1</sup>[/HTML]
is divisible by 3.
I tried a few terms as follows:
n = ... | {} |
The radius of a circle is 3.5 cm, find its circumference and area. A quadrant is a quarter of a circle. Find the area sy Click hereðto get an answer to your question ï¸ Find the area of a quadrant of a circle whose circumference is 22 cm. hardeepsinghguler123 hardeepsinghguler123 ... 154×7 âr . a) 25 cm b) 49 cm ... | {} |
# Using matlab for an numerical error analysis problem in ODE
(a) Consider the following differential Equation
$$Y'(t)=\frac{1}{1+t^{2}}-2[Y(t)]^2$$ $$Y(0)=0$$
The exact solution is $$Y(t)=\frac{t}{1+t^2}$$
Using the Euler method to solve the following differential equation with the help of matlab (code given below... | {} |
Press the right key for the next slide (or swipe left)
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\title {Logic I \\ Lecture 15}
\maketitle
Lecture 15
\def \itit... | {} |
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It is currently 06 Feb 2016, 16:21
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
C... | {} |
# Under what conditions is maintaining two accounts or generally faking two different users by a single person acceptable on PhysicsOverflow?
+ 1 like - 0 dislike
474 views
Under what circumstances is it acceptable to maintain two different accounts or more generally playing two different personalities by a single use... | {} |
# zbMATH — the first resource for mathematics
Sets of solution-set-invariant coefficient matrices of simple fuzzy relation equations. (English) Zbl 0649.04003
Let x, b be two fuzzy sets and A, A’ be two fuzzy relations such that the finite fuzzy equations $$x\circ A=b$$ and $$x\circ A'=b$$ hold, where “$$\circ ''$$ de... | {} |
# What polynomials biject from $\mathbb{N}^{2}$ to $\mathbb{N}$?
Perhaps there are none with integral coefficients; so let us admit rational coefficients. The map $(x, y) \mapsto x + \frac{1}{2}(x + y)(x + y + 1)$ is well known, and swapping $x$ and $y$ in the formula yields another, so we have two for starters.
-
Th... | {} |
# Gerstenhaber - Serezhkin theorem
Let $\mathbb{F}$ be an arbitrary field. Consider $\mathcal{M}_{n}(\mathbb{F}),$ the vector space of all $n\times n$ matrices over $\mathbb{F}.$ Define
• $\mathcal{N}=\{A\in\mathcal{M}_{n}(\mathbb{F}):\,A\,\,\mbox{is nilpotent}\},$
• $\mathcal{GL}_{n}(\mathbb{F})=\{A\in\mathcal{M}_{... | {} |
# Boolean Functions¶
Mathematicians could not stop pondering George’s new Boolean world! They kept coming up with interesting puzzles.
Suppose you have two Boolean variables: A, and B. Since each one can take on two possible valus, there are four combinations of those variables:
A B
0 0
0 1
1 0
1 1
We used this arr... | {} |
# GlucoBerry: Review the Supplement Facts
Full Disclosure
GlucoBerry is a dietary supplement that's designed to support healthy blood sugar regulation. This applies to those that are pre-diabetic or suffering from diabetes. MD/Process GlucoBerry is an all-natural supplement, which means that it was formulated with en... | {} |
# HOW TO CALCULATE THE FUTURE VALUE OF A LUMP-SUM WITH A COMPOUND INTEREST
1
Compound interest is the interest earned on the initial investment plus all the interest that has accumulated over time.
It can also be defined as interest earned on the sum of principal and the accumulated interest.
The idea behind compou... | {} |
# Calibration to well tops
Series Investigations in Geophysics Öz Yilmaz http://dx.doi.org/10.1190/1.9781560801580 ISBN 978-1-56080-094-1 SEG Online Store
The depth structure maps derived from time-to-depth conversion or layer-by-layer inversion invariably will not match the well tops. The sources of discrepancy betw... | {} |
### 支链醇对Gemini表面活性剂表面活性和胶束化行为的影响
1. 中国科学院化学研究所胶体界面与化学热力学实验室 北京 100190
• 投稿日期:2014-02-19 发布日期:2014-04-29
• 通讯作者: 王毅琳 E-mail:yilinwang@iccas.ac.cn
• 基金资助:
项目受国家自然科学基金（Nos.21025313，21021003）资助.
### Effects of Branched-Chain Alcohols on Surface Activity and Micellization of Gemini Surfactants
Tang Yongqiang, Zhu Linyi,... | {} |
# A reduced polytopic LPV synthesis for a sampling varying controller : experimentation with a T inverted pendulum
1 NECS - Networked Controlled Systems
Inria Grenoble - Rhône-Alpes, GIPSA-DA - Département Automatique
2 GIPSA-SLR - SLR
GIPSA-DA - Département Automatique
Abstract : This paper deals with the adaptation ... | {} |
# Apache basic authentication
Apache basic authentication is a general mechanism to password-protect certain webpages, without installing anything extra on top of Apache web server. Apache comes already installed on OSX computers, and can easily be installed on Linux computers. Windows users can also probably use this... | {} |
# Chapter 10 - Review: 155
$(4,16)$
#### Work Step by Step
Let $P=(x_{1},y_{1})=(-3,8)$ and $Q=(x_{2},y_{2})=(11,24)$ The midpoint formula is $(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})$. Substituting the values: Midpoint=$(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})$ Midpoint=$(\frac{-3+11}{2},\frac{8+24}{2})$ ... | {} |
# Why can't an improper transfer function be realized?
A major result in control system theory is that a transfer function, $$G\left( s \right) = \frac{{Y\left( s \right)}}{{U\left( s \right)}}$$ has a state space realization if and only if the degree of $Y(s)$ is less than or equal to the degree of $U(s)$. I cannot f... | {} |
# Add Caption below algorithm environment
I want to add a caption below algorithm environment that spans over two column page in \documentclass[10pt, conference, compsocconf]{IEEEtran}. I use the following:
\usepackage[Algorithm,ruled]{algorithm}
\usepackage{float}
\begin{figure*}
\begin{algorithm*}[H]
This is algor... | {} |
Over the next week we will cover the basics of how to create your own histograms in R. t=(0:length(y)-1)/fs; % time axis. 如何使用iq调制实现16qam？ 注：前面讲的PSK调制（QPSK、8PSK），星座图中的点都位于单位圆上，模相同（都为1），只有相位不同。 而QAM调制星座图中的点不再位于单位圆上，而是分布在复平面的一定范围内，各点如果模相同，则相位必不相同，如果相位相同则模. In short, the FFT is a computationally fast way to generate a pow... | {} |
Question
A disadvantage of secondary data is that the current researcher has no control over the accuracy of the data | {} |
#### Chapter 5 Geometry
Section 5.6 Trigonometric Functions: Sine, et cetera
# 5.6.2 Trigonometry in Triangles
If one drives downhill on a road with a slope of five percent, then the height falls five metres for every 100 metres travelled horizontally. Here, the difference in height is considered in comparison to th... | {} |
# zbMATH — the first resource for mathematics
Averaging of the Cauchy kernels and integral realization of the local residue. (English) Zbl 1186.14053
It is known that Bochner-Martinelli integral formula can be obtained by averaging of the Cauchy formula on some positive measures. In this paper similar formulas for a f... | {} |
# Problem: Helium is collected over water at 25°C and 1.00 atm total pressure. What total volume of gas must be collected to obtain 0.586 g helium? (At 25°C the vapor pressure of water is 23.8 torr.)
###### FREE Expert Solution
83% (341 ratings)
###### Problem Details
Helium is collected over water at 25°C and 1.00 a... | {} |
The unit of e.m.f. of a cell is:A. dyneB. voltC. ampereD. joule
Verified
147k+ views
Hint: If we look at what is emf i.e., electromotive force, it is defined as a battery’s energy per coulomb of charge passing through it. So we will obtain the unit of emf from the basic expression. EMF of a cell could be measured by a... | {} |
# SEARCH CONTENT
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## Abstract
The numerical simulations are used to conduct the comparative study of pin-fins cooling channel and multi-impingement cooling channel on the heat transfer and flow, and to design the multi-impingement channel through the parameters of impinging distance and impingemen... | {} |
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#### Bri MT
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##### Re: VCE Biology Question Thread
« Reply #12720 on: July 02, 2020, 07:55:33 pm »
+9
Does non random mating int... | {} |
# Infinite dimensional subspaces of $L^1$
Suppose that $X$ is an infinite dimensional subspace of $L^{1}$. In some cases it is true that $X$ contains an isomorphic copy of an infinite dimensional Hilbert space. However, it is not the case when $X$ is a subspace of $\ell_1$ (orthonormal basis converges weakly to zero, ... | {} |
C.5 Exercises
For the exercises in this section, first start with specifying the appropriate queueing models needed to solve the exercise using Kendall’s notation. Then, specify the parameters of the model, e.g. $$\lambda_{e}$$, $$\mu$$, $$c$$, size of the population, size of the system, etc. Specify how and what you ... | {} |
# Rabinizer 4: From LTL to Your Favourite Deterministic Automaton
@inproceedings{Ketnsk2018Rabinizer4F,
title={Rabinizer 4: From LTL to Your Favourite Deterministic Automaton},
author={Jan Křet{\'i}nsk{\'y} and Tobias Meggendorfer and Salomon Sickert and Christopher Ziegler},
booktitle={CAV},
year={2018}
}
• Published... | {} |
# Roulette Conditional Probability
A roulette has 38 slots (18 red, 18 black, 2 green). A customer bets on red until she has won 5 times. What is the probability that she made a total of 12 bets?
This is what I've done and I'm getting the wrong answer...
Wrong = ((20/38)^7)((18/38)^5)
Above, in my head, is the prob... | {} |
# Logic Check: Building a SKLearn Pipeline
I am new to the concept of building a pipeline in SKLearn and would appreciate some sense-checking to ensure that I am not leaking info from my training sets into my test set.
Background:
I have a sparse, high-dimensional data-set (370x1000) with a continuous variable as th... | {} |
# What is the average atomic mass of gold if half of the gold found in nature has a mass of 197 amu and half has a mass of 198 amu?
Nov 25, 2015
The average atomic mass is $197.5$.
#### Explanation:
Multiply the mass of each isotope times its percentage as a decimal number and add the results. (50%)/100=0.5
$\text... | {} |
Time Limit : sec, Memory Limit : KB
English
Problem D: Find the Outlier
Professor Abacus has just built a new computing engine for making numerical tables. It was designed to calculate the values of a polynomial function in one variable at several points at a time. With the polynomial function f(x) = x2 + 2x + 1, for... | {} |
# How to calculate the energy required for an electrochemical reaction with over potential?
I am particularly interested in the reaction described in High‐Selectivity Electrochemical Conversion of CO2 to Ethanol using a Copper Nanoparticle/N‐Doped Graphene Electrode.
The reaction is
$$\ce{2 CO + 9 H2O + 12 e- -> C2H... | {} |
# Group Epimorphism Induces Bijection between Subgroups
## Theorem
Let $G_1$ and $G_2$ be groups whose identities are $e_{G_1}$ and $e_{G_2}$ respectively.
Let $\phi: G_1 \to G_2$ be a group epimorphism.
Let $K := \ker \left({\phi}\right)$ be the kernel of $\phi$.
Let $\mathbb H_1 = \left\{{H \subseteq G_1: H \le ... | {} |
# multiplicative digital root
Given an integer $m$ consisting of $k$ digits $d_{1},\dots,d_{k}$ in base $b$, let
$j=\prod_{i=1}^{k}d_{i},$
then repeat this operation on the digits of $j$ until $j. This stores in $j$ the multiplicative digital root of $m$. The number of iterations of the multiplication operation is ... | {} |
# How to calculate width of remaining part of line
I wish to create section heading using titlesec like image
But I have some difficulties in determining the width of remaining of line to include blue box containing section label, my method consist of subtracting length of gray box from textwidth but it did not work.... | {} |
# Find all values such that the inequality is true
Mod note: Moved from a technical math section, so missing the homework template.
This is for an Intro to Analysis course. It's been a very long time since I've taken a math course, so I do not remember much of anything.
=============
Here is the problem:
For the ine... | {} |
# Text tool for designing gameplay elements [closed]
I'm still in the design phase of my game and I'm realizing that there are too many elements to keep track of and it just looks like a mess in the plain text that I created it in. My notes are basically going to translate to the classes and subclasses that'll make up... | {} |
Warning
This documents an unmaintained version of NetworkX. Please upgrade to a maintained version and see the current NetworkX documentation.
# negative_edge_cycle¶
negative_edge_cycle(G, weight='weight')[source]
Return True if there exists a negative edge cycle anywhere in G.
Parameters: G (NetworkX graph) – wei... | {} |
## Archive for the ‘Best of Dethorning STEM’ Category
### The Fallacy of the Right Answer
The Fallacy of the Right Answer is everywhere. With regards to education technology, it dates back at least to BF Skinner.
Skinner saw education as a series of definite, discrete, linear steps along a fixed, straight road; toda... | {} |
# Are really scientists earning this much?
1. Sep 24, 2010
### Tom83B
http://wiki.answers.com/Q/What_are_the_highest_paying_jobs
In this article, they say that average astronomer's salary is more than $90000 and that physicist is 25th best paying job... I somehow always thought, that physicists would earn more by be... | {} |
# Can a nowhere continuous function have a connected graph?
After noticing that function $$f: \mathbb R\rightarrow \mathbb R$$ $$f(x) = \left\{\begin{array}{l} \sin\frac{1}{x} & \text{for }x\neq 0 \\ 0 &\text{for }x=0 \end{array}\right.$$ has a graph that is a connected set, despite the function not being continuous a... | {} |
# Do prime numbers have prime factors?
(This is a somewhat trivial question). Do prime numbers have prime factors, i.e. itself? For example is 7 a prime factor of 7?
The reason I ask this is because there is a statement in my lecture notes: If a number $n>1$ is not prime, then it has a prime factor.
I was hoping to ... | {} |
?
Free Version
Moderate
Oxidation States and Ionization Energies
CHEM-CROVZY
Which of the following statements about the oxidation states and ionization energies are true? Select ALL that apply.
A
Vanadium exists as ${ V }^{ 5+ }$ as it highest oxidation state.
B
Iron exist as ${ Fe }^{ 4+ }$ within hemoglobin... | {} |
## EE Student Information
### The Department of Electrical Engineering supports Black Lives Matter. Read more.
• • • • •
EE Student Information, Spring Quarter through Academic Year 2020-2021: FAQs and Updated EE Course List.
Updates will be posted on this page, as well as emailed to the EE student mail list.
As a... | {} |
ODTÜ-BÝLKENT Algebraic Geometry Seminar
(See all past talks
ordered according to speaker and date)
**** 2021 Spring Talks ****
(The New Yorker, Dec 7, 2020 Cover)
This semester we plan to have all our seminars online
1. Zoom, 5 February 2021, Friday, 15:40
Caner Koca-[City University of New York] - Kähler Geometry... | {} |
One-loop corrections to multiscale effective vertices in the EFT for Multi-Regge processes in QCD
# One-loop corrections to multiscale effective vertices in the EFT for Multi-Regge processes in QCD
Maxim Nefedov
Samara National Research University,
II Institute for Theoretical Physics, Hamburg University
E-mail: nefe... | {} |
# How do you evaluate 3/5 \div 4/7?
Apr 14, 2018
$\frac{21}{20}$
#### Explanation:
$\frac{3}{5} \div \frac{4}{7}$
Dividing by a number is the same thing as multiplying it by its reciprocal, or $1$ over the number.
Therefore, this expression can be rewritten as $\frac{3}{5} \cdot \frac{7}{4}$.
Now, we can simplif... | {} |
prioritizr / prioritizr
# Compare 73e98cf ... +0 ... 8dd4040
Showing 15 of 79 files from the diff.
R/zones.R changed.
R/solve.R changed.
Other files ignored by Codecov
docs/pkgdown.yml has changed.
man/solve.Rd has changed.
man/zones.Rd has changed.
@@ -4,7 +4,7 @@
4 4 #' Category vector 5 5 #' 6 6 #' Convert an ... | {} |
# Solved
The problem has been solved
## Rosetta Antibody: Unable to open file and terminates
Category:
Compilation
Hello, please note I'm revising my posting with some major updates, apologies to the 9 viewers who have come here prior as this will read completely different.
I'm encountering a read error with antib... | {} |
2 edited body
For $\mathbb{R}$. Suppose f is our compactly supported function and g(x) is its Fourier transform. Since f is compactly supported, $\hat{f} = g$ is the restriction to $\mathbb{R}$ of an entire function g(z) by the Paley-Weiner Paley-Wiener theorems. Since g is entire and vanishes on an open set, $g \equi... | {} |
# Trigonometric function facts for kids
Kids Encyclopedia Facts
(Redirected from Secant)
All of the trigonometric functions of any angle can be constructed using a circle centered at O with radius of 1.
Trigonometric functions: Sine, Cosine, Tangent, Cosecant, Secant, Cotangent
In mathematics, the trigonometric funct... | {} |
# Tag Info
33
Yes. Yes. A thousand times yes. Markdown provides enough methods to draw attention to different parts of text, though bold and italic and even bold italic, not to forget block quotes when one wishes to quote a large section of text, to make using colors via MathJax completely unnecessary. Not only that,... | {} |
Search results
Search: All articles in the CJM digital archive with keyword representations
Expand all Collapse all Results 1 - 9 of 9
1. CJM Online first
Rotger, Victor; de Vera-Piquero, Carlos
Galois Representations Over Fields of Moduli and Rational Points on Shimura Curves The purpose of this note is i... | {} |
# 代数|MA20217/MA20219 Algebra 2B代写
Elementary axiomatic theory of rings. Integral domains, fields, characteristic. Subrings and product of rings. Homomorphisms, ideals and quotient rings. Isomorphism theorems. Fields of fractions.
Use Cramer’s rule to solve the system
\begin{aligned} 2 x_{1}-x_{2} &=1 \ 4 x_{1}+4 x_{2... | {} |
## Can i expect good results having low correlation attributes?
4
This was a question i saw in an interview for a data scientist position:
"Here is the following correlation heatmap that i got from my attributes. Regarding the correlation of each feature with the dependent variable (target/class), it is noticeable t... | {} |
# Why I hate philosophy
Discussion in 'General Philosophy' started by rpenner, Apr 26, 2012.
1. ### TeroRegistered Member
Messages:
76
I always had trouble with philosophers. To honor them, I posted a story a few weeks back.
Oops. It wont let me post it. So here is the story, you can see it on my home page.
3. ###... | {} |
# Goldman-Turaev formality implies Kashiwara-Vergne
Tuesday, 4 December, 2018
## Published in:
arXiv:1812.01159
Let Σ be a compact connected oriented 2-dimensional manifold with non-empty boundary. In our previous work, we have shown that the solution of generalized (higher genus) Kashiwara-Vergne equations for an ... | {} |
# Tag Info
37
The Elements of Statistical Learning by Hastie et al. define ridge regression as follows (Section 3.4.1, equation 3.41): $$\hat \beta{}^\mathrm{ridge} = \underset{\beta}{\mathrm{argmin}}\left\{\sum_{i=1}^N(y_i - \beta_0 - \sum_{j=1}^p x_{ij}\beta_j)^2 + \lambda \sum_{j=1}^p \beta_j^2\right\},$$ i.e. exp... | {} |
# Commutativity of a sheaf of groups from an epimorphism
Let $F$ and $G$ be sheaves of groups $\mathcal{S}^{op}\to Groups$ and $f:F\to G$ an epimorphism (of sheaves of sets).
If $F$ is a sheaf of commutative groups, is $G$ also a sheaf of commutative groups?
If $f$ would be a surjection on every section then for $x,... | {} |
# In what topology DM stacks are stacks
Background/motivation
One of the main reason to introduce (algebraic) stacks is build "fine moduli spaces" for functors which, strictly speaking, are not representable. The yoga is more or less as follows.
One notices that a representable functor on the category of schemes is ... | {} |
Peirce’s 1870 “Logic Of Relatives” • Comment 10.12
Potential ambiguities in Peirce’s two versions of the “rich black man” example can be resolved by providing them with explicit graphical markups, as shown in Figures 28 and 29.
(28) (29)
On the other hand, as the forms of relational composition become more complex,... | {} |
## College Algebra 7th Edition
$2x^3-6x^2+4x$
Square the binomial using the formula $(a-b)^2=a^2-2ab+b^2$ with $a=x$ and $b=2$ to obtain: $=x^2(x-2)+x[x^2-2(x)(2) + 2^2] \\=x^2(x-2)+x(x^2-4x+4)$ Distribute $x^2$ and $x$ to obtain: $=x^2(x) -x^2(2) + x(x^2) -x(4x)+x(4) \\=x^3-2x^2+x^3-4x^2+4x$ Combine like terms to obt... | {} |
SEARCH HOME
Math Central Quandaries & Queries
Question from Monica, a student: Find dy/dx in terms of x and y, if sin(xy)=(x^2)-y. I tried to solve the problem by doing... =cos(xy)*[x*y'+y*x'] = 2x - y* y' =cos(xy)*[x*y'y+y*1] =2x-y*y' =cos(xy)*[(dy/dx)*x+y] = 2x-y*y' y'*(x+y)cos(xy) = y'(y-2x) I am not sure if I sim... | {} |
# phase difference
The magnitude is thus: and the phase is given by tan ϕ = −3 as ϕ = −72°.
Phase difference, $\Delta \phi$ between 2 particles is just the difference in phase between them. In conjunction with the phase difference are two other terms: When the waveform A is ahead of B (i.e., when it reaches its maximu... | {} |
## Commutators of angular momentum and a central force Hamiltonian
September 30, 2015 phy1520 , , , ,
In problem 1.17 of [1] we are to show that non-commuting operators that both commute with the Hamiltonian, have, in general, degenerate energy eigenvalues. It suggests considering $$L_x, L_z$$ and a central force Ham... | {} |
# What is the expectation of an empirical model in model based RL?
Artificial Intelligence Asked by ijuneja on November 4, 2021
In the paper – "Action Elimination and Stopping Conditions for the Multi-Armed Bandit and Reinforcement Learning Problems", on page 1083, on the 6th line from the bottom, the authors define ... | {} |
# Artin groups of type $D_n$ as mapping class groups?
According to Allcock (Braid Pictures for Artin groups, https://arxiv.org/abs/math/9907194), the Artin group $$A(D_n$$) of type $$D_n$$ may be realized as an index 2 subgroup of the orbifold fundamental group of $$\{x \in L^n | \forall i \neq j, x_i \neq x_j\}$$, wh... | {} |
## Elementary Algebra
$80=2\times2\times2\times2\times5$
80 divided by the prime number 5 is 16. 16 can be broken down further into prime factors: $2\times2\times2\times2$. Therefore, $80=2\times2\times2\times2\times5$ | {} |
## FILE FORMATS
Creating add-ons for Microsoft Flight Simulator requires a great number of files, even for small additions to the sim. Most of the files will be created for you by the editors in the sim, or will have been created beforehand using external tools (like 3DS Max). However, some files are used time and aga... | {} |
# Exchange rate peg and level irfs
Dear dynare-users,
In my model Ive got the change of the nominal exchange rate DS_t as an endogenous variable. I define an exchange rate peg as a policy which sets DS_t=1. My question is, how can I retrieve the level of the exchange ratewithout getting an unit root? Wheb I define exp... | {} |
Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack
GMAT Club
It is currently 29 Mar 2017, 22:06
### GMAT Club Daily Prep
#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed y... | {} |
# How can I change the color of an object at runtime?
I wish to have the shader effect as in the game 'The stack' by ketchapp
As you can see, the color of the objects as well as the skybox keep changing.
I'm completely c# noob and trying my best to find shaders to replicate the effect. But I can't find anything.
Ho... | {} |
# $\limsup$ and $\liminf$ of a sequence
Consider a sequence $$a_{n}$$ with $$a_{n}=(-1)^{n} (\frac{1}{2}-\frac{1}{n})$$. Let $$b_{n}=\sum_{k=1}^{n} a_{k}$$ for all $$n\in\mathbb{N}$$. Then find
$$\limsup\limits_{n\to\infty} b_{n}\ \ \text{and}\ \ \liminf\limits_{n\to\infty} b_{n}$$
• Compute $b_1,b_2,b_3,b_4$ and see... | {} |
# Tag Info
## Hot answers tagged librarylink
67
I wrote a package to automatically generate all the boilerplate needed for LibraryLink and for managed library expressions based on a template that describes a class interface: LTemplate Here's how it works Write a template (a Mathematica) expression that describes a C... | {} |
Week4TeamBWProblems - Problem 1 Two boats the Prada(Italy...
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Problem 1: Two boats, the Prada (Italy) and the Oracle (USA), are competing for a The sample times in minutes for the Prad... | {} |
Found 547 results
2018
F. Sottile, TDDFT, Linear Response and the DP code. EUSPEC Training School on Spectroscopy Codes, Sofia (Bulgaria), 2018.
2017
L. Prussel, Ab-initio description of optical nonlinear properties of semiconductors in the presence of an electrostatic field, Ecole Polytechnique, Palaiseau, 2017.
F. So... | {} |
# What is the value of $$\frac{a^{2}~+~ac}{a^{2}c~-~c^{3}}-\frac{a^{2}~-~c^{2}}{a^{2}c~+~2ac^2~+~c^3}-\frac{2c}{a^2~-~c^2}+\frac{3}{a~+~c}$$?
This question was previously asked in
CDS Maths Previous Paper 10 (Held On: 8 Nov 2020) - 10
View all CDS Papers >
1. 0
2. $$\frac{ac}{a^2 + c^2}$$
3. $$\frac{6}{a+c}$$
Option ... | {} |
Math Help - trig prove
1. trig prove
$cosecA+cosec2A+cosec4A=cot\frac{A}{4}-cot4A$
2. Re: trig prove
Originally Posted by srirahulan
$cosecA+cosec2A+cosec4A=cot\frac{A}{4}-cot4A$
This is not true in general. Try, for example, $A=\frac\pi3$. | {} |
# What WD-40 Is REALLY For!
67,620 views • Nov 18, 2020
67K views - 3 days ago
Fran Blanche
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I love spending time on my PC :
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Another day, another time to go to bed. Nighties lovelies!
Also: ain’t easy being crow…
…but it’s a little easier than being attorney / lawyer / barrister.
... | {} |
/ hep-ex CERN-EP-2017-138
Search for new phenomena with large jet multiplicities and missing transverse momentum using large-radius jets and flavour-tagging at ATLAS in 13 TeV $pp$ collisions
Pages: 53
Abstract: A search is presented for particles that decay producing a large jet multiplicity and invisible particles... | {} |
Expanding over-the-counter derivatives books at Citi and Goldman Sachs inflated their systemic scores more than any other indicator used by the Basel Committee to assess banks’ systemic risk, Risk Quantum analysis shows.
Citi reported notional amounts of OTC derivatives of $41.4 trillion at end-March, up 14.7% from th... | {} |
# How to fit gamma distribution to events not happen? [duplicate]
I am trying to fit a gamma distribution to the failure time of a kind of bulb. I have 40 data. However only half of them are actually the failure time. The result 20 are times those bulbs being used (but they haven't failed yet).
How can I fit a gamma ... | {} |
How do you evaluate the expression (c-a)- b given that a=-10, b=4, and c=1?
Apr 12, 2018
$7$
Explanation:
$\text{substitute the given values into the expression}$
$\Rightarrow \left(c - a\right) - b$
$= \left(\textcolor{b l u e}{1} - \textcolor{red}{- 10}\right) - \textcolor{m a \ge n t a}{4}$
$\left[\text{note ... | {} |
# The feasible solution for a LPP is shown in fig.12.12.Let $Z=3x-4y$ be the objective function.(Maximum value of $Z$+Minimum value of $Z$) is equal to
$(A)13 \quad (B)\; 1\quad (C)\;-13 \quad (d)\;-17$ | {} |
# Would quantum entanglement be increased by anti-Unruh effect?. (arXiv:1802.07886v1 [gr-qc])
on 2018-2-24 1:22pm GMT
Authors: Taotao LiBaocheng ZhangLi You
We study the "anti-Unruh effect" for an entangled quantum state in reference to the counterintuitive cooling previously pointed out for an accelerated detector ... | {} |
Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Biogeosciences, 16, 3977–3996, 2019
https://doi.org/10.5194/bg-16-3977-2019
Biogeosciences, 16, 3977–3996, 2019
https://doi.org/10.5194/bg-16-3977-2019
Research article 17 Oct 2019
Research ar... | {} |
Question
Fri February 25, 2011
# what are phasors?can u pls explain what is phasor diagram
Fri February 25, 2011
Dear student
Phasors are actually rotating vectors that are used to represent an alternating current or some other sinusoidally varying quantity.
Phasor is defined as the A representation of sine wave with... | {} |
pvlib.iotools.read_crn(filename)[source]
Read a NOAA USCRN fixed-width file into pandas dataframe. The CRN is described in 1 and 2.
Parameters
filename (str, path object, or file-like) – filepath or url to read for the fixed-width file.
Returns
data (Dataframe) – A dataframe with DatetimeIndex and all of the varia... | {} |
# Korea postpones currency swap decision
The Bank of Korea (BOK) postponed a decision Wednesday 15 June on a proposal to lend some of its foreign exchange reserves to domestic banks through currency swaps, the central bank said.
The central bank's policymakers were expected to approve the currency swaps at a meeting ... | {} |
# SEABOX - Editorial
#1
Author: Sergey Nagin
Tester: Istvan Nagy
Editorialist: Misha Chorniy
Medium-hard
DP(Knapsack)
# Problem Statement
You are given a fragment of code and binary 3-dimensional array $A[0..N-1, 0..N-1, 0..N-1]$, where $N$ can be only power of $2$, $1 <= N <= 32$. Consider all 3-dimensional arra... | {} |
# Solving for X in a Kronecker Product Matrix Equation
I'm looking to solve this equation:
$$I = (A \otimes (XB)) + E$$
for $X$ with matrices $A,B$, error matrix $E$, and identity $I$, such that $\lVert E \rVert_F$, the frobenous norm of $E$ is minimized (if needed, another matrix norm is fine). But I'm not sure how... | {} |
# 3D printing overhangs that are over .200 in
I am new to 3D printing but have been in CNC Machining for a few years. I have a part I am trying to print that is a cylinder 1.000 in. in diameter and has a .200 in overhang starting at 1.300 in. In other words I am printing a 1.300 in. cylinder that is 1.500 in. tall tha... | {} |
logarithmic trickery
Consider that since $\log(a)\log(b)=\log(a^{\log b})=\log(b^{\log{a}}$, and therefore, somewhat unexpectly: $a^{\log b} = b^{\log a}$
we can use it to construct new identities thusly
Let $A = \prod_{n=1}^{\infty} \sqrt[2]{1+\frac{1}{n^{2}}}$
Let $B = \prod_{m=1}^{\infty} \sqrt[e^{m}]{1+\frac{1}{... | {} |
# Chapter 4 - Exponential Functions - Exercises to Skills for Chapter 4 - Page 185: 59
Cannot be found.
#### Work Step by Step
The base of the fraction (which is a radical) is even. Thus, we cannot raise the given negative number to the given power since we cannot take the nth-root of a negative number if $n$ is eve... | {} |
# _______ lubrication technique is used for lubrication of the cylinder of a scooter engine.
1. Petroil
2. Splash
3. Gravity feed
4. Forced feed
Option 1 : Petroil
## Detailed Solution
Explanation:
Petroil (Petro-oil lubrication system): In this method, the lubricating oil is mixed with petrol and fed into the eng... | {} |
# Problem #2010
2010 All the numbers $2, 3, 4, 5, 6, 7$ are assigned to the six faces of a cube, one number to each face. For each of the eight vertices of the cube, a product of three numbers is computed, where the three numbers are the numbers assigned to the three faces that include that vertex. What is the greate... | {} |
# A generalized version of inclusion exclusion principle using a binomial identity
I'm trying to find a way to derive a generalized inclusion exclusion principle for the number of elements which are in the intersection of at least $s$ sets from $A_1,A_2,...,A_n$ using this identity:
let $k$ and $s$ be positive intege... | {} |
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