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## 17Calculus Integrals - Tangent Reduction Formula
##### 17Calculus
This page covers the derivation and use of the tangent reduction formula for integration.
Tangent Reduction Formula ($$n$$ is an integer and $$n>1$$)
$$\displaystyle{\int{\tan^n x~dx}= \frac{\tan^{n-1}x}{n-1} - \int{\tan^{n-2}x~dx}}$$
When you ha... | {} |
# Fitting ratios in multiple regression formula
I would like to ask a (probably very simple) question with regards to multiple linear regression.
I have an experimental formula in the form:
$$Y \sim \frac{a_0 \cdot X_0}{(a_1 \cdot X1) * (a_2 \cdot X_2)}$$
and I want to set up a linear model which fits the $a_i$ coe... | {} |
## Journal of Generalized Lie Theory and Applications
### Lie Group Method for Studying the Heat Generation Effect on Freeconvection Laminar Boundary-layer Flow Over a Vertical Flat Plate
#### Abstract
The nonlinear equations of heat and mass transfer in two-dimensional free-convection, laminar, boundary layer flow ... | {} |
Article Contents
Article Contents
On a mathematical model of tumor-immune system interactions with an oncolytic virus therapy
• * Corresponding author: Sophia R-J Jang
• We investigate a mathematical model of tumor–immune system interactions with oncolytic virus therapy (OVT). Susceptible tumor cells may become infec... | {} |
# Femtosecond valley polarization and topological resonances in transition metal dichalcogenides
### 摘要
We theoretically introduce the fundamentally fastest induction of a significant population and valley polarization in a monolayer of a transition metal dichalcogenide (i.e., MoS$_2$ and WS$_2$). This may be extende... | {} |
# Conjugate Representations for $\mathfrak{sl}(2,\mathbb{C})$
Let $\mathfrak{sl}(2,\mathbb{C})$ be the complex Lie algebra of $SL(2,\mathbb{C})$ and $\mathfrak{sl}(2,\mathbb{C})_\mathbb{R}$ be its realification; that is $\mathfrak{sl}(2,\mathbb{C})_\mathbb{R}$ is $\mathfrak{sl}(2,\mathbb{C})$ considered as a real Lie ... | {} |
Calculus/Integration/Exercises
← Integration techniques/Numerical Approximations Calculus Area → Integration/Exercises
Integration of Polynomials
Evaluate the following:
1. ${\displaystyle \int (x^{2}-2)^{2}dx}$
${\displaystyle {\frac {x^{5}}{5}}-{\frac {4x^{3}}{3}}+4x+C}$
2. ${\displaystyle \int 8x^{3}dx}$
${\... | {} |
# PLICP 2012-12-03
An ICP variant using a point-to-line metric. In Proceedings of the IEEE International Conference on Robotics and Automation (ICRA). Pasadena, CA, May 2008. bibtex
Abstract -- This paper describes PLICP, an ICP (Iterative Closest/Corresponding Point) variant that uses a point-to-line metric, and an ... | {} |
# Stability of nonlinear system with borderline linearization
I have the following nonlinear system: \begin{align} x_1'=& x_1-x_2-x_1^3\\ x_2'=& x_1+x_2-x_2^3 \end{align} I wish to classify the equilibrium points and determine their stability using the linearization. First, I found the equilibrium points as follows: \... | {} |
# Open Access in Scottish Universities
“My interview actually lasted more than half an hour, though most of what I was trying to communicate wasn’t really consistent with what the interviewers wanted. If you watch the video through, you’ll notice the editorial push towards green rather than gold OA*. I do understand t... | {} |
# Search by Topic
#### Resources tagged with Working systematically similar to Inclusion Exclusion:
Filter by: Content type:
Stage:
Challenge level:
### There are 129 results
Broad Topics > Using, Applying and Reasoning about Mathematics > Working systematically
### A First Product Sudoku
##### Stage: 3 Challenge... | {} |
# Composite operators near the boundary
2019-12-13
We use renormalization group methods to study composite operators existing at a boundary of an interacting conformal field theory. By reinterpreting the boundary operator expansion as operator renormalization we relate the boundary conformal data to short-distance (n... | {} |
Question
Using energy considerations and assuming negligible air resistance, show that a rock thrown from a bridge 20.0 m above water with an initial speed of 15.0 m/s strikes the water with a speed of 24.8 m/s independent of the direction thrown.
$24.8 \textrm{ m/s}$
Solution Video
OpenStax College Physics Solution... | {} |
## Algebra 1
Answers may vary, and two possible solutions are provided. 34: $6n^2+34n+28 =(6n+28)(n+1)$ 59: $6n^2+59n+28 = (3n+28)(2n+1)$
$6n^2+xn+28$ $(6n+28)(n+1) = 6n^2+6n+28n+28 = 6n^2+34n+28$ $(3n+28)(2n+1) =6n^2+3n+56n+28 = 6n^2+59n+28$ | {} |
# Chess board in JS
I've completed the small challenge in the eloquent JS book to create a chess board pattern:
Write a program that creates a string that represents an 8×8 grid, using newline characters to separate lines. At each position of the grid there is either a space or a “#” character. The characters should ... | {} |
## Trigonometry (11th Edition) Clone
Express $\tan\Big(\frac{3\pi}{4}+x\Big)$ as a function of $x$ alone. $$\tan\Big(\frac{3\pi}{4}+x\Big)=\frac{\tan x-1}{1+\tan x}$$
$$\tan\Big(\frac{3\pi}{4}+x\Big)$$ To be expressed as a function of $x$ alone, we need here the identity for sum of tangents: $$\tan(A+B)=\frac{\tan A+\... | {} |
# Exponential Hedging and Entropic Penalties
@article{Delbaen2002ExponentialHA,
title={Exponential Hedging and Entropic Penalties},
author={Freddy Delbaen and Peter Grandits and Thorsten Rheinl{\"a}nder and Dominick Samperi and Martin Schweizer and Ch. Stricker},
journal={Mathematical Finance},
year={2002},
volume={12... | {} |
# xdvipdfmx:fatal: File ended prematurely Error 256 (driver return code) generating output
I try to set up auctex. It basically works now and I can compile and view simple files from within emacs. But there is one file working with includes that gives me:
xdvipdfmx:fatal: File ended prematurely
No output PDF file wr... | {} |
# Google's Python exercise about lists very different from the given solution
I found some Python exercises that were made by Google in their Python classes and decided to spend some time with them.
Given the following description:
E. Given two lists sorted in increasing order, create and return a merged ist of all ... | {} |
# American Institute of Mathematical Sciences
December 2020, 28(4): 1545-1562. doi: 10.3934/era.2020081
## Global weak solutions for the two-component Novikov equation
School of Mathematics and Statistics and Center for Nonlinear Studies, Ningbo University, Ningbo 315211, China
Received May 2020 Revised July 20... | {} |
## Neutral Pion Lifetime Measurements and the QCD Chiral Anomaly [PDF]
A. M. Bernstein, Barry R. Holstein
A fundamental property of QCD is the presence of the chiral anomaly, which is the primary component of the $\pi^0\rightarrow\gamma\gamma$ decay amplitude. Based on this anomaly and its small ($\simeq$ 4.5%) chi... | {} |
# Radiation vector for a short dipole near a perfect magnetic conductor
by Bromio
P: 61 It's an idealization. PEC (Perfect Electric Conductor): $\hat{n}\times\vec{E}=0$ and $\hat{n}\times\vec{H}=\vec{J}_s$. PMC (Perfect Magnetic Conductor): $\hat{n}\times\vec{E}=-\vec{M}_s$ and $\hat{n}\times\vec{H}=0$. Thank you. | {} |
# HDR float pixel issue
This topic is 3482 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.
## Recommended Posts
Hi! I'm trying to implement a simple IBL scene but i have some problems with flickering pixels. they are barely noticable in the original rendering but ... | {} |
Chapter 48
### Introduction
We swallow approximately 1200 times daily, largely subconsciously. While we take the fundamental function for granted, disordered swallowing can be a devastating condition, with substantial morbidity for those affected.
Ian Cook 1996
Dysphagia is difficulty in swallowing. It is a common ... | {} |
# Find d2ydx2, if y = ex - Mathematics and Statistics
Sum
Find ("d"^2"y")/"dx"^2, if y = "e"^"x"
#### Solution
y = "e"^"x"
Differentiating both sides w.r.t.x, we get
"dy"/"dx" = "e"^"x"
Again, differentiating both sides w.r.t. x , we get
("d"^2"y")/"dx"^2 = "e"^"x"
Is there an error in this question or solutio... | {} |
# Is an irrational number odd or even?
My sister just asked this question to me: "Is an irrational number odd or even?" I told her that decimals are not odd or even and that does imply that not recurring and non repeating decimals will also not be odd or even. But I want a rigorous math proof for this. Can someone hel... | {} |
## Solution
#### Approach 1: Pop and Push Digits & Check before Overflow
Intuition
We can build up the reverse integer one digit at a time. While doing so, we can check beforehand whether or not appending another digit would cause overflow.
Algorithm
Reversing an integer can be done similarly to reversing a string... | {} |
# Square Numbers
Not Reviewed
"squared" =
Tags:
Rating
ID
MichaelBartmess.Square Numbers
UUID
45f8bed6-4443-11e3-a47b-bc764e049c3d
Enter a number to find its square number.
Picture the square with sides equal to the number you gave. | {} |
# Math question
1. May 10, 2005
### Logistics
I have a major exam coming up and we've been given few past exam papers to go through to practice.
I have absolutely no idea what to do here , if people could help me out, work it out etc. It would be greatly appriciated.
Thanks
Last edited: May 10, 2005
2. May 10, 20... | {} |
F_q-structures on schemes - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-22T04:21:35Z http://mathoverflow.net/feeds/question/12095 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/12095/f-q-structures-on-schemes F_q-structures on schemes S1 2010-01-17T12:30:12Z... | {} |
# Problem of the Day: 12/23/12
Out of a classroom containing 20 people, each with a different name, what is the probability that Alfred, Camellia, Edward, Grace, and Ian will be chosen by the teacher to run errands before school today? Express your answer as a common fraction.
Solution to yesterday’s problem:
For thi... | {} |
# magni.cs.phase_transition._data module¶
Module providing problem suite instance and noise generation functionality.
The problem suite instances consist of a matrix, A, and a coefficient vector, alpha, with which the measurement vector, y, can be generated (with or without noise from the noise vector e)
## Routine ... | {} |
# American Institute of Mathematical Sciences
January 2017, 13(1): 375-397. doi: 10.3934/jimo.2016022
## Markowitz's mean-variance optimization with investment and constrained reinsurance
Centre for Actuarial Studies, Department of Economics, The University of Melbourne, VIC, 3010, Australia
* Corresponding autho... | {} |
## Monday, February 16, 2015
### A quick look at the 1.5 release
Welcome back.
Just a quick post to share some information on the latest QuantLib release (version 1.5, released this past Tuesday; grab it at this link if you haven't already) and to thank all the contributors that made it possible.
There were quite a... | {} |
# Dini derivative
In mathematics and, specifically, real analysis, the Dini derivatives (or Dini derivates) are a class of generalizations of the derivative. They were introduced by Ulisse Dini who studied continuous but nondifferentiable functions, for which he defined the so-called Dini derivatives.
The upper Dini ... | {} |
# domain of functions 3
• January 21st 2010, 11:55 AM
bastropgarl
domain of functions 3
how do you find the domain of the function f(x)=9-x over the square root of x+7
• January 21st 2010, 12:26 PM
masters
Quote:
Originally Posted by bastropgarl
how do you find the domain of the function f(x)=9-x over the square root... | {} |
Preview is different from the post
https://cs.stackexchange.com/a/139329/114966
Seems like lists and equations are not friendly with each other.
Preview: Result:
I seem to have fixed it, now all the indentations are in line and they all say N. rather than N):
1. \begin{align} v_1 + v_2 + v_3 \qquad = 1\\ \qquad v_... | {} |
## Top new questions this week:
### Why "monoxide" but not "diodine"?
When naming compounds, sometimes when there are two vowels in a row the second is elided: this happens for example with "mono-oxide", which becomes "monoxide" instead. Why is this ...
nomenclature terminology
### What are the criteria for a molec... | {} |
## Fix What Is The Relative Standard Error (Solved)
Home > Standard Error > What Is The Relative Standard Error
# What Is The Relative Standard Error
## Contents
Companies ... As the denominator is the absolute value of the mean, the RSD will always be positive. Confidence intervals represent the range in which the... | {} |
2–3 tree
2–3 tree
Typetree
Invented1970
Invented byJohn Hopcroft
Time complexity in big O notation
Algorithm Space Average Worst case O(n) O(n) O(log n) O(log n) O(log n) O(log n) O(log n) O(log n)
In computer science, a 2–3 tree is a tree data structure, where every node with children (internal node) has either two ... | {} |
# 调试 nova rescue --password 参数过程记录
## 代码逻辑
nova rescue 进行密码注入的整个代码逻辑还是十分简洁明了的，在使用命令时加上 --password 参数便可以进行密码的注入。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 # nova/nova/api/openstack/compute/rescue.py @wsgi.expected_errors((400, ... | {} |
# Quark Matter 2014 - XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions
19-24 May 2014
Europe/Zurich timezone
## sPHENIX Detector and Physics Program
20 May 2014, 16:30
2h
### spectrum
Board: M-17
Poster Future Experimental Facilities, Upgrades, and Instrumentation
### Speaker
Near th... | {} |
##### 1. The Solvability of Concave-Convex Quasilinear Elliptic Systems Involving $p$-Laplacian and Critical Sobolev Exponent
Volume 12, Issue 1, Autumn 2018, Pages 39-57
10.22130/scma.2018.46462.98 | {} |
# 10 things I love about Julia
#### December 28, 2021
Those who know me know that my love for the Julia language has grown quite a bit in the past couple years. Still, I had trouble finding a project that would allow me to work more in this nifty language until I saw Jasmine Hughes solve all of last year Advent of Co... | {} |
Volume 356 - The 4th KMI International Symposium (KMI2019) - Posters
Heavy quark spin multiplet structure of Pc-like pentaquark as hadronic molecular states
Y. Shimizu
Full text: pdf
Pre-published on: 2019 November 14
Published on: 2019 November 21
Abstract
Exotic hadrons are the very interesting research subjects in h... | {} |
# .
In mathematics, specifically in the representation theory of Lie groups, a Harish-Chandra module is a representation of a real Lie group, associated to a general representation, with regularity and finiteness conditions. When the associated representation is a (\mathfrak{g},K)-module, then its Harish-Chandra modul... | {} |
## Visual study of the winding number of a closed path in the complex plane. The Argument Principle¶
This notebook is dedicated to the so called Argument Principle for meromorphic functions. More precisely we visualize the geometric version of this principle, which allows to identify zeros and singularities in a graph... | {} |
# CMS Theses
უკანასკნელი დამატებები:
2016-08-23
11:13
Исследование и оптимизация параметров катодно-стриповых камер для прецизионной мюонной станции установки "компактный мюонный соленоид" (CMS) на большом адронном коллайдере (LHC) / Moisenz, Petr
2016-08-10
19:03
Measurement of the polarization of tau--leptons pro... | {} |
# Sum of Squares without multiplication
I want to sum the squares for a given number N from 1 without using Multiplication. Is it possible?
-
Please check the documentation properly.Try n = 10;Sum[i^2, {i, 1, n}] or Total@Table[i^2, {i, 1, n}]. – PlatoManiac Sep 5 '12 at 9:38
n = 10; Sum[ Sum[j, {j, i}], {i, n}] – ... | {} |
# NAG AD Libraryd01ga_a1w_f (dim1_data_a1w)
Note: _a1w_ denotes that first order adjoints are computed in working precision; this has the corresponding argument type nagad_a1w_w_rtype. Further implementations, for example for higher order differentiation or using the tangent linear approach, may become available at la... | {} |
### Home > CC1MN > Chapter 9 > Lesson 9.1.2 > Problem9-22
9-22.
Simplify the expressions below.
1. $4·4+4(5−2)+7$
Remember to calculate the value of each term before adding!
$35$
Be sure to show your work!
1. $7−9\div9+4(4−3)−7$
The expression in parentheses should be simplified first.
Then remember to always mu... | {} |
## Workshop on the Elements of Reasoning: Objects, Structure and Causality
### Sungjin Ahn · Wilka Carvalho · Klaus Greff · Tong He · Thomas Kipf · Francesco Locatello · Sindy Löwe
Abstract Workshop Website
Fri 29 Apr, midnight PDT
Abstract:
Discrete abstractions such as objects, concepts, and events are at the bas... | {} |
# How do you graph the line y=1?
Aug 3, 2017
A straight line parallel to the $x -$axis through the point $\left(0 , 1\right)$
#### Explanation:
$y = 1$
A straight line in slope $\left(m\right)$ and intercept $\left(c\right)$ form is:
$y = m x + c$
In this example, $y$ is a straight line of slope 0 and $y -$inter... | {} |
# Problem #1837
1837 In $\triangle BAC$, $\angle BAC=40^\circ$, $AB=10$, and $AC=6$. Points $D$ and $E$ lie on $\overline{AB}$ and $\overline{AC}$ respectively. What is the minimum possible value of $BE+DE+CD$? $\textbf{(A) }6\sqrt 3+3\qquad \textbf{(B) }\dfrac{27}2\qquad \textbf{(C) }8\sqrt 3\qquad \textbf{(D) }14\q... | {} |
# Automated texture mapping
I have a set of seamless tiling textures. I want to be able to take an arbitrary model and create a UV map with these properties:
• No stretching (all textures tile appropriately so there is no stretching and sheering of the texture)
• The textures display on the correct axis relative to t... | {} |
## College Algebra 7th Edition
The curve is not a function of $x$.
RECALL: The Vertical Line Test states that if all vertical lines will pass through a graph in at most one point, then the graph represents a function of $x$. Note that the vertical line $x=-1$ passes through the given graph in an infinite number of poi... | {} |
# interest rates
## Error message
Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in _menu_load_objects() (line 579 of /var/www/drupal-7.x/includes/menu.inc).
## On Negative Rates
### Tags
Negative interest rates – weird, right?
In the five thousand years t... | {} |
# Add option to class with command
Is it possible add at the loaded class some options? look at the example below:
\documentclass{scrbook}
\begin{document}
test
\end{document}
-
I would do a \def\MyClassOptions{} before \documentclass, and use \documentclass[MyClassOptions]{scrbook}. This could also allow (with s... | {} |
# My First Keygen
Recently, I’m reading pediy’s book: Encryption and Decryption. This is a really good book with many practical technologies and skills, and it’s also very interesting. In Chapter 2, I met a problem, so I cracked the demo crack-me program with ollydbg, but I’m not satisfied with that, so I studied the ... | {} |
Question
A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of $30.0^\circ$ above the horizontal. It strikes a target above the ground 3.00 seconds later. What are the x and distances from where the projectile was launched to where it lands?
$x = 130 \textrm{ m}$, $y = 30.9 \textrm... | {} |
# Automatic Tracking of the Muscle Tendon Junction in Healthy and Impaired Subjects using Deep Learning
Christoph Leitner*, Robert Jarolim, Andreas Konrad, Annika Kruse, Markus Tilp, Jörg Schröttner, Christian Baumgartner
*Korrespondierende/r Autor/in für diese Arbeit
Publikation: Beitrag in einer FachzeitschriftArt... | {} |
# Translation of nabla modality with box and diamond modalities
I got an exercise from my teacher to translate formulas of modal logic with modal operator $\nabla$ into formulas with operators $\Box$ and $\Diamond$.
If the set of possible worlds is $X$, the accessibility relation is $R$ and the semantics of $\nabla$ ... | {} |
# Clarifying PT symmetry
I understand that if a Hamiltonian remains invariant under the following transformations then it is PT invariant,
\begin{eqnarray} \mathrm{Parity \; reversal:} \; \; \hat{p} \to -\hat{p} \; \; \mathrm{ and } \; \; \hat{x} \to -\hat{x} \\ \mathrm{Time \; reversal:} \; \; \hat{p} \to -\hat{p}, ... | {} |
Hensel's Lemma
Hensel's Lemma
Let $p$ be an odd prime, $f \in \mathbb{Z}[x]$, and $m,r \in \mathbb{Z}$ such that $m>0$ and $f(r) \equiv 0 \mod p^m$. Then the following statements hold true.
1. If $f^\prime (r) \not \equiv 0 \mod p$ and $f(r) \not \equiv 0 \mod p^{m+1}$, then there is a unique integer $t$ such that $... | {} |
Advances in Energy and Power Engineering
Vol.06 No.01(2018), Article ID:23396,9 pages
10.12677/AEPE.2018.61001
Solar Thermal Power Generation Technology in a New Generation of Energy System Positioning
Jing Zhan, Zhifeng Wang*
Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing
Received: Dec. ... | {} |
## Study Questions
— With QuizzerWeb
##### Mathematics (2015) QUIZ STUDY
The Correct Options are highlighted thus - >
.
1.
In a town of 6250 inhabitants, there were 62 births during 1984. Find the percentage birth rate
.
A. 3%
B. 1.00%
C. 2.50%
D. 5.40%
Explanation.
Percentage birthrate = 1.0%
2.
Simplify 1¼ ÷ (2 ... | {} |
# Minecraft piston pushing
In Minecraft, pistons are blocks that can move other blocks. However, they can only move at most twelve blocks, and won't work at all if any obsidian is in the way. Also, slime blocks are sticky and stick to other blocks, except for obsidian.
Take as input a 5x5 matrix or similar, containin... | {} |
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• Abstract: found
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Is Open Access
# Ultraviolet Divergences in Cosmological Correlations
Preprint
Bookmark
There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them... | {} |
# Optimal insertion of edges for a graph [closed]
I am working on a problem which could be reduced to a graph optimization problem as below.
• A set of colored nodes is given.
• The edges are to be inserted between the nodes.
• A node can have only 4 edges at max.
• A table provides rules for profit contribution f... | {} |
# can i connect dc motor directly to battery
Probably not--The typical brushed motor is pretty voltage tolerant. Warning − Do not drive the motor directly from Arduino board pins. I am still not sure but seems good. Since 12V lead batteries were originally designed for cars, there are many things that work that way. i... | {} |
# How can I highlight ligatures?
I'd like to highlight all the ligatures used in a document similar to the image below
as an attempt to show off some of TeX's tender loving care for the font being used.
Is there a way to do this automatically? My guess is that it would be much easier in XeTeX, but any automatic solu... | {} |
# Building without Visual Studio
This page will be a tutorial for building of the Source SDK 2013 without Microsoft Visual Studio.
The tool that will be used is msbuild.exe, which is included with the .NET Framework.
It is assumed that all of the fixes specified in Source SDK 2013 were applied to your source code.
... | {} |
## Monday, November 26, 2012
### Mad Libs with Mail Merge
Every time I hear the song Let it Snow, Let it Snow, Let it Snow! I am reminded of an activity I did once several years ago when I used to teach computer applications. We were learning about mail merge features in Microsoft Word. We had finished an assignment ... | {} |
## College Physics (4th Edition)
Although the expression $E = cB$ can be a useful ratio, it can not be used to compare the magnitude of the electric field to the magnitude of the magnetic field in any meaningful way because they are measured in different units.
The electric field $E$ is measured in units of $N/C$. The... | {} |
Home | Menu | Get Involved
# Derivative Calculator
Enter a function to differentiate:
Variable: Order: Show help
Derivative Calculator computes derivative of a function with respect to given variable using analytical differentiation and displays a step-by-step solution. It also allows to draw graphs of the function ... | {} |
# How can I make this model?
Here's the model I'm trying to print, Truncated Icosahedron
But it must be 12" in diameter and gray in color rgb = #444444
I also want two of the hexagons to be yellow in color: rgb = #FFFF00
Similar to this photo:
How to do this? I don't seem to be able to edit the shape on shapeways.... | {} |
[SlimDX] Text Rendering Issue
This topic is 2201 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.
Recommended Posts
I've been having a weird issue with SlimDX lately. The text is not rendering properly, it looks cut off. I'm using DirectX 9. See screenshot for info... | {} |
# What mass of water can be produced when "43.2 g" of oxygen gas reacts with an excess of hydrogen gas in the reaction "2H"_2("g") + "O"_2("g")"rarr"2H"_2"O"?
Dec 15, 2017
$\text{48.6 g}$ of Water would be produced from $\text{43.2 g}$ of Oxygen.
#### Explanation:
$\text{O"_2 + "2H"_2}$$\rightarrow$$\text{2H"_2"O}$... | {} |
Pi and Einstein field equations
ignoramus1
I understand the difference betw mathematical and physical pi. I also understand that in non-Euclidean space the value of pi would differ depending on a surface's deviation from flatness.
But is there a different symbol for physical pi, to distinguish it from mathematical pi... | {} |
# What's the best way to change how my code looks?
A long time ago the question avoiding Python multiline string indentation was asked. The question was well received with a score of 66 and 16 favourites. It was even answered by one of our previous mods (who deleted their answer).
However yesterday it popped up in th... | {} |
It is neither positive nor negative. SplashLearn is an award winning math learning program used by more than 30 Million kids for fun math practice. Also learn the facts to easily understand math glossary with fun math worksheet online at SplashLearn. How to use zero in a sentence. ‘The principal quantum number n may ha... | {} |
# What is the study of the changes in the energy that accompanies chemical reactions and physical changes?
This is called $\text{thermochemistry..............}$
Which is a subset of $\text{thermodynamics}$. | {} |
# Snap cursor to selected within a python script?
What's the right way to snap cursor to selected with Python? I'm getting a failed context error with this:
bpy.ops.view3d.snap_cursor_to_selected()
I've seen a solution using an operator but this is not what I want (at least I don't think?).
• If you use it in an o... | {} |
# Solving system of linear equations (to determine a boundry)
I'm puzzeled how to programmatically (in R) solve the following linear system:
Given $\mathbf{R} \in \mathbb{R}^{n \times n}$, $\mathbf{R}^{-1}$, and a constant $c$ what is the solution to $\mathbf{u} \in \mathbb{R}^n$ with $\mathbf{u}^T = (u_1, \ldots, u_... | {} |
How to include MathJax in an epub3 file to work with iBooks (and possibly others)
At the Joint Mathematics Meetings Present and Future of Mathematics on the Web session, Lila Roberts presented an excellent demo of the good stuff you can do with iBooks author. The demo included MathJax and jsxgraph, and combined both w... | {} |
# Tag Info
14
Well, the sentence It seems like if it's an inherent property of the spring it shouldn't change, so if it does, why? clearly isn't a valid argument to calculate the $k$ of the smaller springs. They're different springs than their large parent so they may have different values of an "inherent property": ... | {} |
## optimization problem
Hey,
Is there any way to optimize the following formula for x:
$
\sum_{\tau=1}^{t}c_1(1-x)(1-e^{-c_2x\tau-c_3})
$
where:
0<=x<=1
all constants are positive | {} |
# Find the Equation Using Two Points (2,4) , (2,5)
,
Use to calculate the equation of the line, where represents the slope and represents the y-intercept.
To calculate the equation of the line, use the format.
Slope is equal to the change in over the change in , or rise over run.
The change in is equal to the differen... | {} |
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2 Dec
gibson memphis es 345
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Written for the reader with a modest statistical background and minimal knowledge of SAS software, Survival Analysis Using SAS: A Practical Guide teaches many aspects of data input and manipulation. Only as many residuals are output as names are supplied on the, We should ... | {} |
# Have meal
Time Limit: 2000/1000 MS (Java/Others)
Memory Limit: 32768/32768 K (Java/Others)
## Description
I have been in school for several years, so I have visited all messes here. Now I have lost intersts in all of the foods. So when during the meal time, I don’t know which mess I should go to. So I came up wit... | {} |
## A quasi-linear, singular perturbation problem of hyperbolic type.(English)Zbl 0612.35007
The authors consider the singular perturbation problem $\epsilon L_ 2(u)+M_ 1(u)=h,\quad u(t=0)=f,\quad u_ t(t=0)=g,$ where $$L_ 2(u)=u_{tt}-c^ 2u_{xx}$$, $$M_ 1(u)=au_ t+bu_ x+du$$, a,b,c,d functions of (x,t,u), $$x\in {\mathb... | {} |
# Fm reciever
Status
Not open for further replies.
#### cs200939
##### New Member
hi i ve just made and Fm transmitter wth a mic and its working way to fine.my transmit frequency is between 97 to 98 Mhz. until now ive been using my radio to recieve the output signal now i need to make my own simple reciever.is it po... | {} |
# Asymptotic expansion, negative powers
The question was inspired by this discussion:
How to expand a function into a power series with negative powers?
I am interested in asymptotic behavior of a function at infinity:
f[r_]:=(0.04962 Exp[-2 r] (-1.000+r))/((0.06119+(Exp[-2 r])^(2/3))^2 r)
or (TeX)
$$f(r)=\frac{... | {} |
Base change
In mathematics, especially in algebraic geometry, base change refers to a number of similar theorems concerning the cohomology of sheaves on algebro-geometric objects such as varieties or schemes.
The situation of a base change theorem typically is as follows: given two maps of, say, schemes, ${\displayst... | {} |
Welcome to the Schizophrenia Resource Centre
Welcome, this website is intended for healthcare professionals in EMEA with an interest in the treatment of schizophrenia. By clicking the link below you are declaring and confirming that you are a healthcare professional
Is Early Intervention for Psychosis Feasible and Ef... | {} |
(There is an update to this post, which you should read after this one.)
I’ve been assigning Sage assignments for several years in my (standard) undergraduate abstract algebra course. (They are all available now in Judson’s open source text.) Mid-term last Spring I switched over to using the new “course” functionalit... | {} |
# [SOLVED]5.2.006 AP Calculus Exam Volume by Rotation
#### karush
##### Well-known member
$\displaystyle\pi\int_{0}^{\infty} e^x \ dx = \pi$
Ok I looked at some of the template equations but came up with this.
#### MarkFL
Staff member
I think you'd have the correct answer if the integrand is $$e^{-x}$$, but as gi... | {} |
# InverseLaplaceTransform does not evaluate [closed]
I am very new to Mathematica and not a mathematician, so the question may be very trivial.
I am trying to find the function $$f(t)$$ such that
$$\qquad e^{-e^{s}} = \int_0^{+\infty} e^{-st}f(t)dt$$,
so I tried using the inverse Laplace transform function.
Invers... | {} |
# Convert YYYYMM to MMMYY
Basing on this SO question.
Challenge is rather simple: given a date period in the format YYYYMM output it in the format MMMYY.
### Rules:
• The input will be a number or a string exactly 6 characters long, consisting only of digits.
• Last two digits will be between 01 and 12.
• Output mu... | {} |
Well, Alaska is coming up as I pointed out earlier, need a great lense for taking those nature shots. Also, the kids are in enough sports now that a good high quality lense would really let me capture some great moments. Here are ones to consider. Thanks to David Ruether - SUBJECTIVE Lens Evaluations (Mostly Nikkors) f... | {} |
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