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Under what circumstances would the large internal input resistance of an actual op amp affect circuit operation?
I was able to find a lot about why the input resistance is high and basically infinite. I understand that the input resistance is high so that it doesn't become a load on the signal. I also know that it mak... | {} |
Complete metric space
• January 16th 2009, 12:39 PM
aliceinwonderland
Complete metric space
(a)Give an example of two metric spaces $(X_{1}, d_{1})$ and $(X_{2}, d_{2})$ which are topologically equivalent and for which $(X_{1}, d_{1})$ is complete and $(X_{2}, d_{2})$ is not.
(b)Give an example of a set X with two eq... | {} |
# How to convert a latex document with Tikz/Pgf images and Latexmk into HTML?
I am hoping this is not a duplicate, but I was googling around so much that I can't remember where I started.
But I have a latex document that has some tikz and pgf images in it. I usually use latexmk to compile the file to pdf. Now, I want... | {} |
# Cambridge A Level - Questions on Combinations
I have learnt combinations and I have been attempting at these two questions but couldn't solve it:
1) In a mixed pack of coloured light bulbs there are three red bulbs, one yellow bulb, one blue bulb and one green bulb. Four bulbs are selected at random from the pack. ... | {} |
# Choosing Reflection or Refraction in Path Tracing
I am trying to implement refraction and transmission in my path tracer and I'm a bit unsure on how to implement it. First, some background:
When light hits a surface, a portion of it will reflect, and a portion will be refracted:
How much light reflects vs. refract... | {} |
# How to set the Y coordinates for a Graph with defined X coordinates to prevent overlap of nodes?
I would like to draw a Graph with defined $x$ coordinates and variable node sizes. If I simply replace the $x$ coordinates of a graph, then nodes can overlap and edges may cross each other. I would appreciate any help po... | {} |
# Normal Shock Table
Gold Member
Hello,
I am wondering, on a Normal Shock Table, what are the two most right columns supposed to mean?
What is the ratio P02/P01 and P1/P02 supposed to be?
#### Attachments
• normal_shock.pdf
36.5 KB · Views: 239
$p_{02}/p_{01}$ is how the total pressure changes across the shock an... | {} |
Is #P contained in PSPACE?
It's obvious that NP $\subseteq$ #P. How about #P $\subseteq$ PSPACE?
It strikes me as semi-obvious, since we can check whether an assignment (e.g. for SAT) is a solution in polynomial time (and hence space), and since each assignment can be checked separately, we can re-use the memory need... | {} |
# Alkynes
We are searching data for your request:
Forums and discussions:
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Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.
## Alkynes: molecular orbital model
In molecular orbit theory (MO theory), atomi... | {} |
# The Yu Group in the fight against COVID-19: Curating data, predicting deaths, and building partnerships
The Yu Research Group at UC Berkeley Statistics and EECS, led by PI Bin Yu, has worked to curate a comprehensive COVID-19 data respository and predict the spread of deaths caused by the virus. You can read our pap... | {} |
A NOTE ON GAUSS`S SECOND SUMMATION THEOREM FOR THE SERIES 2F1(1/2)
Title & Authors
A NOTE ON GAUSS`S SECOND SUMMATION THEOREM FOR THE SERIES 2F1(1/2)
Choi, June-Sang; Rathie, Arjun K.; Purnima, Purnima;
Abstract
We aim at deriving Gauss`s second summation theorem for the series $\small{_2F_1(1/2)}$ by using Euler`s i... | {} |
0
RESEARCH PAPERS
# Numerical and Experimental Study of Heat Transfer in a BIPV-Thermal System
[+] Author and Article Information
L. Liao, A. K. Athienitis, L. Candanedo, K.-W. Park
Department of Building, Civil and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. West, Montreal, QC, H3G 1M... | {} |
Syntax
is >> x
Purpose
Sets x to a parameter with value b corresponding to is >> b where b is a Base object. It is assumed that this Base input operation returns a reference to is .
is
The operand is has prototype std::istream& is
x
The operand x has one of the following prototypes AD<Base>& ... | {} |
Torque & Acceleration (Rotational Dynamics) Video Lessons
Concept
# Problem: A light rigid rod with masses attached to its ends is pivoted about a horizontal axis as shown above. When released from rest in a horizontal orientation, the rod begins to rotate with an angular acceleration of magnitude
###### FREE Expert... | {} |
# Both t-test and F-test are significant, do I report both?
I undertook a large study (N about 200 in both control and treatment) in which one of the user ratings is significantly different (p < 0.0001). When I ran the unpaired t-test, the F-test also returned significant (p = 0.0003). This violates the t-test assumpt... | {} |
# Hubble Space Telescope Wide Field Camera 3 Identifies an r(p)=1 Kpc Dual Active Galactic Nucleus in the Minor Galaxy Merger SDSS J0924+0510 at z=0.1495
## Author(s): Liu, Xin; Guo, Hengxiao; Shen, Yue; Greene, Jenny E.; Strauss, Michael A.
To refer to this page use: http://arks.princeton.edu/ark:/88435/pr11h82
Abs... | {} |
How can a particle accelerator kill you with *neutrinos*?
In this paper:
http://wwwphy.princeton.edu/mumu/target/King/king_WEBR6_pac99.pdf "Potential Hazards from Neutrino Radiation at MUON Colliders"
Abstract
High energy muon colliders, such as the TeV-scale conceptual designs now being considered, are found to pr... | {} |
You’ll also note that each vertical axis now has minor ticks. Python Matplotlib Cheat Sheet - Free download as PDF File (. 1 # the bottom of the subplots of the figure top = 0. To adjust the padding, the space between the subplots in a single Figure, use plt. Scatter( x=[x1], y=[y1], ) fig. For pie plots it’s best to u... | {} |
Annotaion Based On The Genomic Range
5
0
Entering edit mode
10.1 years ago
Hello all I have some data like this related to mouse genome
chr1 3000000 3000090
chr2 4339993 4389898
chr5 3000330 3003339
chr7 3323233 3390393
I know that by using UCSC genome browser we can get the information related to the presence of g... | {} |
# Charging 10 1.2V nicd batteries
I have 10 x 1.2V Sanyo NiCd batteries. They are connected in series. I would like to charge them. The thing is, I don't have a charger. I looked up chargers and they are all quite expensive(I live in India). I would like to know what voltage AC to DC adapter should I get to charge the... | {} |
# IBDP Physics 4.2 – Travelling waves: IB Style Question Bank SL Paper 2
### Question
Two loudspeakers, A and B, are driven in phase and with the same amplitude at a frequency of 850 Hz. Point P is located 22.5 m from A and 24.3 m from B. The speed of sound is 340 m s–1.
a. Deduce that a minimum intensity of sound i... | {} |
# boxes spanning several pages
I defined some time ago a box environment with the following features:
• It has a frame-color and a background color
• It stores the marginnotes, if any, and restore them at the end of the box. I use for this the commands \mpgmpar@savemarginpars and \mpgmpar@restoremarginpars from the p... | {} |
# Difference equations and stability
1. Oct 9, 2005
### Benny
Hi I am unsure about stability of fixed points here is an example.
$$x_{n + 1} = x_n$$
There are fixed points at x = 0 and x = 1. In general when talking about difference equations and whether a fixed point is stable or unstable, does this refer to poin... | {} |
# Include links for certain paragraphs
I would like to include links/reference points in my latex document, e.g.
The situation is the following:
There is a certain paragraph on, say page 11, and on page 13 there is a link and when the reader clicks this link (which does not necessarily have to be blue) then the read... | {} |
Question:
How east is the earth traveling?
The earth moves round the sun in an oval track that has an average radius of 93 million miles, at a speed of 18.5 miles a second.
510,072,000 km2
5.972191024 kg
0.367 (geometric)
Solar System Local Interstellar Cloud Local Bubble Gould Belt Orion Arm Milky Way Milky W... | {} |
Enter the applied force, pin diameter, and plate thickness into the calculator to determine the pin shear stress and bearing area stress.
## Pin Shear Formula
The following formula is used to calculate pin shear.
SS = 4*AF / (pi*D^2)
BS = AF / (t*d)
• Where SS is the pin shear stress (N/mm^2, lbs/in^2)
• BS is the b... | {} |
# Exceptional matroids in chain theorems
At the end of November 2017, the Tutte Centenary Retreat was held. 32 researchers gathered in Creswick Australia to work on problems in three areas where Tutte made seminal contributions. One of those three areas was Matroid Structure Theory: nine of us (Rutger Campbell, Debor... | {} |
## Abstract
This paper presents a robust method for controlling the terrestrial motion of a bimodal multirotor vehicle that can roll and fly. Factors influencing the mobility and controllability of the vehicle are explored and compared to strictly flying multirotor vehicles; the differences motivate novel control and ... | {} |
# help create events w/ boost
This topic is 3551 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.
## Recommended Posts
I'm new to boost and what I'm doing seems very simple, but I can't get it. I want to store 3 events onto a priority_queue and have them execute n ... | {} |
# Density function and expectation of a random variable
Random variable $X$ has exponential distribution $\mathcal E(\lambda)$ with probability $0.3$, and distribution given by density function $f_2(x)=\frac{1}{2}e^{-|x+1|},\forall x\in\mathbb R$ with probability $0.7$. Find density (density function) and expectation ... | {} |
# Math Help - need help to sketch the curve
1. ## need help to sketch the curve
would you sketch the curve with the polar equation r = 2cos(2theta), and express the equation in rectangular coordinates, that is what must be represented.
2. Originally Posted by rcmango
would you sketch the curve with the polar equatio... | {} |
# Flow equation for system of coupled tanks
Consider the following system of interconnected tanks:
The two tanks have cross-section areas $$A_1$$ and $$A_2$$ respectively and the levels of the liquid are denoted by $$h_1$$ and $$h_2$$ respectively.
The liquid can run from one vessel into the other through a tube of ... | {} |
Question 4
# Numbers of boys and girls are 'x' and 'y' respectively ; average ages of a girl and a boy are 'a' years and 'b' years respectively. The average age (in years) of all boys and girls.
Solution
Number of boys = $$x$$
Average age of boys = $$b$$
=> Total age of boys = $$bx$$
Similarly, total age of girls... | {} |
## How to type Raku unicode characters in Emacs
Raku programming language uses some unicode characters as operators, quotation marks, etc. In this post I'm going to explain how to type those characters in Emacs using input methods.
First, you might want to see a list of those characters and their ASCII equivalents he... | {} |
# Gas station without pumps
## 2014 July 14
### Need new mesh seat for recumbent
Filed under: Uncategorized — gasstationwithoutpumps @ 21:28
Tags: , , ,
I need to replace the mesh seat on my recumbent bicycle, because one of the buckles snapped yesterday. The mesh itself is badly stretched and abraded, and a few of... | {} |
# Vertically align individual cells in a table
I am wanting the ability to vertically align any cell within a table. This appears possible but only on a per column or row basis. At the moment I can horizontally align the contents of individual cells with the help of the \raggedleft and \centering commands. However, \m... | {} |
# First-hitting-time model
(Redirected from First passage time)
In statistics, first-hitting-time models are a sub-class of survival models. The first hitting time, also called first passage time, of a set $A$ with respect to an instance of a stochastic process is the time until the stochastic process first enters $A... | {} |
# Cormen Edition 3 Exercise 8.1 Question 3 (Page No. 194)
68 views
Show that there is no comparison sort whose running time is linear for at least half of the $n!$ inputs of length $n$.What about a fraction of $1/n$ inputs of length $n$? What about a fraction $1/2^n$?
## Related questions
1
99 views
Suppose that you... | {} |
Set up power-law or nonparametric weights for the neighbourhood component of hhh4-models as proposed by Meyer and Held (2014). Without normalization, power-law weights are $$w_{ji} = o_{ji}^{-d}$$ (if $$o_{ji} > 0$$, otherwise $$w_{ji} = 0$$), where $$o_{ji}$$ ($$=o_{ij}$$) is the adjacency order between regions $$i$$ ... | {} |
# Relationship between ampere turns and flux density calculator
### Converting Magnetic Field Strengths - Ampere-Turns to Tesla : askscience
Calculate the amount of magnetic flux (Φ) in a piece of iron with a reluctance (ℜ) of 55 amp-turns per weber and an applied MMF (F) of amp-turns. Explain the difference between ... | {} |
From A. Messiah’s Quantum Mechanics p.321 and 722 ff. , Dover (1999)
Any unitary transformation of the vectors and the observables of the Schrödinger (or Heisenberg) representations defines a new representation.
Any problem of quantum mechanics essentially consists of the determination of the properties of the unitar... | {} |
# System solution
• Feb 25th 2014, 11:58 AM
polarbear73
System solution
$x=zx+zy$
$y=zx+2zy$
$x^2+2xy+y^2=100$
Is this system solvable? I can solve for z in terms of x and y, but I can't separate x and y to get a solution. Its three unkowns and three equations, but I don't know if all three unkowns have to be in all t... | {} |
40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
40m Log, Page 65 of 344 Not logged in
ID Date Author Type Category Subject
17017 Tue Jul 19 07:34:46 2022 AnchalUpdateCalibrationError propagation to astrophysical parameters from detector calibration uncertainty
1. Yeah... | {} |
# ⚖️ Scale Schedule#
Tags: Best Practice, Speedup
## TL;DR#
Scale Schedule changes the number of training steps by a dilation factor and dilating learning rate changes accordingly. Doing so varies the training budget, making it possible to explore tradeoffs between cost (measured in time or money) and the quality of... | {} |
# actual evaluation – Are these variations of advanced multiplication studied subjects? Answer
Hello pricey customer to our community We will proffer you an answer to this query actual evaluation – Are these variations of advanced multiplication studied subjects? ,and the respond will breathe typical via documented da... | {} |
# dirac delta – Derivative of the probability transformation formula
Let $$f: mathbb {R} ^ n rightarrow mathbb {R}$$ to be a measurable function of Borel. (It can further be assumed that $$| frac { partial f} { partial z_i} |> 0$$.
$$overrightarrow {Z} = (Z_1, Z_2, points, Z_n$$ is a random variable vector with proba... | {} |
### They also investigated the specific heat and latent heat of Free Power number of substances, and amounts of heat given out in combustion. In Free Power similar manner, in 1840 Swiss chemist Germain Free Electricity formulated the principle that the evolution of heat in Free Power reaction is the same whether the pr... | {} |
Home /Reading Room/Ian Stewart: Choosily Chomping Chocolate
Choosily Chomping Chocolate
MATHEMATICAL RECREATIONS by Ian Stewart
Scientific American, October 1998
Just because a game has simple rules, that doesn't imply that there must be a simple strategy for winning it. Sometimes there is — tic-tac-toe is a good e... | {} |
# Discrete Mathematics Questions and Answers – Counting – Terms in Binomial Expansion
«
»
This set of Discrete Mathematics Multiple Choice Questions & Answers (MCQs) focuses on “Counting – Terms in Binomial Expansion”.
1. In a blindfolded game, a boy can hit the target 8 times out of 12. If he fired 8 shots, find ou... | {} |
Simple Indicies Question
1. Dec 3, 2011
lloydowen
Simple Indicies Question [SOLVED]
1. The problem statement, all variables and given/known data
I'm having a little problem with indicies, I know it's simple for someone with a lot of question.
So I'm wondering what to do first in this question, brackets or should I... | {} |
# Am I differentiating this right
A0, A1, A2, b0, b1, b2 are all constants.
I would appreciate if one Math expert could confirm this is done right. I am developing an algorithm and this is the foundation.
-
Yeah, that looks good. And "differentiaing" is the word you are looking for, not "derivated". – Ravi Donepudi... | {} |
## Archive for the 'Shameless self promotion' Category
### Idea Mine
Over at Science After Sunclipse, Blake has post discussing some Star Trek: TNG history, in which I happen to have some involvement.
Reverse the Baryon Flux Polarity!
The details involve the episode Starship Mine
In the annals of nitpickery, “Star... | {} |
# World's hardest easy geometry problem
Tags:
1. Dec 23, 2015
### livinonaprayer
have you encountered it and/or solved it? what did you think?
2. Dec 23, 2015
### Greg Bernhardt
3. Dec 23, 2015
### livinonaprayer
4. Dec 23, 2015
### JonnyG
I got infinitely many solutions...anyone else get that too?
5. Dec 23... | {} |
# The Value of [ → a − → B , → B − → C , → C − → a ] , Where - Mathematics
MCQ
Sum
The value of $\left[ \vec{a} - \vec{b} , \vec{b} - \vec{c} , \vec{c} - \vec{a} \right], \text { where } \left| \vec{a} \right| = 1, \left| \vec{b} \right| = 5, \left| \vec{c} \right| = 3, \text { is }$
#### Options
• 0
• 1
• 6
• n... | {} |
# Corrigenda Numerical Approximation PDEs
The following list of corrections is updated occasionally and ordered chronologically. Important changes are marked by an exclamation mark. Letters t,m,b refer top, middle, and bottom parts of a page.
Last update: February 7, 2019
# Chapter 1: Finite difference method
Nr. ... | {} |
# Open problem in geometric group theory
16 Nov
Update: Per Jeremy’s comments, I’ve updated the end of this post to be more clear and less inaccurate/blatantly untrue. Thanks Jkun!
The other day in my topics in geometric group theory course, my professor described an open problem which I thought was pretty cool and... | {} |
# What Are The Factors Affecting The Efficiency Of Electrostatic Precipitators In Operation?
Aug. 30, 2021
Compartilhar
Electrostatic Smoke Precipitator Dust Collector
The electrostatic precipitator may reduce work efficiency due to some factors in use, which is not what you want to see. Therefore, this article summ... | {} |
# How do I use something related to mobius inversion to solve this problem?
The problem is given below: For two sequences of complex numbers $\{a_0, a_1, \cdots, a_n, \cdots\}$ and $\{b_0, b_1, \cdots, b_n, \cdots\}$ show that the following relations are equivalent: $$a_n = \sum_{k = 0}^n{b_k}\ for\ all\ n \Leftrighta... | {} |
### Home > PC3 > Chapter 8 > Lesson 8.1.3 > Problem8-51
8-51.
Calculate the area of the triangle below. Homework Help ✎
Use the Law of Cosines to determine the measure of one of the angles.
Use the formula below to calculate the area.
$A=\frac{1}{2}ab\sin(\theta)$ | {} |
# Converting a BAM file into VCF
I have NGS illumina RNA-seq reads from M. musculus (mm10). I am trying to find variants along the strand portion of the reads in the refseq (mm10).
I mapped a pair of sequence files and generated a BAM file. Now I need to generate a VCF file from this BAM file. I’ve checked Galaxy for... | {} |
Math Help - Finding the exact value of sin 3
1. Finding the exact value of sin 3
Question says if...
$cos 72 = \frac{\sqrt5 - 1}{4}$
then find the exact value of sin 3
How would one go about doing this?
2. Originally Posted by username11111
Question says if...
$cos 72 = \frac{\sqrt5 - 1}{4}$
then find the exact... | {} |
# Problems 5-1 through 5-2
5-1 Earned Value Calculation You are 4 months into a 6 month project. The project is linear, which means that the progress and spending occurs at a constant rate. Our crack project team of highly skilled associates has worked diligently and put in extra hours to keep the project going. Our a... | {} |
1. ## Notation again again
I do not know how to search this but does
$C^{\infty}$ mean that is differentiable any number of times, or something?
Any help appreciated.
2. Originally Posted by Mathstud28
I do not know how to search this but does
$C^{\infty}$ mean that is differentiable any number of times, or someth... | {} |
# Monotonic Cubic Spline interpolation (with some Rust)
Monotonic Cubic Spline interpolation (MCSI) is a popular and useful method which fits a smooth, continuous function through discrete data. MCSI has several applications in the field of computer vision and trajectory fitting. MCSI further guarantees monotonicity o... | {} |
## anonymous 3 years ago .
1. anonymous
b
2. Hero
@Luis_Rivera is very good at not giving answers
3. Hero
4. Hero
I'm not tellin :P
5. anonymous
yep cause you dont know
6. Hero
Actually, I do
7. anonymous
"ya sure you do"
8. Hero
By the way, the expression can also be written as $\frac{d}{2} - 10$
9. an... | {} |
# Upgrades to PA, speakers specifically
#### curtis73
##### Well-Known Member
Hey, all. Just had something kinda sprung on me. Skip to the bottom if you don't want the details. When I took over as TD here 7 years ago, we had very little in the way of sound. Over the years I have taken donations, traded stuff, and I'v... | {} |
# Math Help - what am i doing wrong?
1. ## what am i doing wrong?
Find the present value of an annuity that pays $6000 at the end of each 6-month period for 8 years if the interest rate is 8% compounded semiannually. According to my book, the answer is$69,913.77
I don't understand why?
according to my method i get a... | {} |
# how can I test quality of sbox?
I have 11 sboxes, I want to test them and find the best one. How can I do that, I found several criterions for that but I could not understand.
• Statistical testing can only show something is really bad. At best the result is "not trivially broken". But it can not prove security, an... | {} |
# Accurate fundamental parameters for lower main‐sequence stars
@article{Casagrande2006AccurateFP,
title={Accurate fundamental parameters for lower main‐sequence stars},
author={Luca Casagrande and Laura Portinari and Chris Flynn},
journal={Monthly Notices of the Royal Astronomical Society},
year={2006},
volume={373},... | {} |
# Convolution of signals sampled on a logarithmic grid
Is there a practical accelerated algorithm or a theoretical discrete (Fourier) transform based method to convolve discrete-time signals sampled on a logarithmic grid? What I mean is representing a discrete-time signal by the sequence:
$$[1, 1, 1],$$
as a shortha... | {} |
Enter your weight in pounds and your weight while gripping the bar into the calculator to determine your grip strength.
## Grip Strength Formula
The following equation is used to calculate Grip Strength.
GS = W - WHB
• Where GS is your grip strength (lbs)
• W is your body weight (lbs)
• WHB is your body weight while... | {} |
Q
In Fig. 6.42, if lines PQ and RS intersect at point T, such that ∠ PRT = 40°, ∠ RPT = 95° and ∠ TSQ = 75°, find ∠ SQT.
4. In Fig. 6.42, if lines PQ and RS intersect at point T, such that $\angle$ PRT = 40°, $\angle$ RPT = 95° and $\angle$ TSQ = 75°, find $\angle$ SQT.
Views
We have,
lines PQ and RS intersect at p... | {} |
# Find the cardinality of the set of all norms on R^n (hint: show that every norm || || : R n → R is continuous).
Find the cardinality of the set of all norms on R n (hint: show that every norm || || : R n ? R is continuous).
Answers can be viewed only if
1. The questioner was satisfied and accepted the answer, or
2.... | {} |
Tuesday, March 30, 2021
Agreement Among 3 Raters or More When A Subject Can be Rated by No More than 2 Raters
Most methods proposed in the literature for evaluating the extent of agreement among 3 raters assume that each rater is expected to rate all subjects. In some inter-rater reliability applications however, thi... | {} |
# Indexical uncertainty and subjective randomness
+ 2 like - 0 dislike
585 views
@user1247 wrote in the context of a many worlds discussion
given that indexical uncertainty in the space of all worlds leads to subjective randomness.
I'd like to have an explanation of what this means and in which sense the first lead... | {} |
# Preconditioner for nonlinear optimization
Hello,
I am working on the following nonlinear minimization problem:
\displaystyle{\min_{\boldsymbol{c} \in R^n}} \mbox{ }\frac{1}{M} \sum_{i=1}^{M} \left(\frac{1}{2} \left[\boldsymbol{c}^T \boldsymbol{f}_0 + \int_0^{x^i} \sigma(\boldsymbol{c}^T\boldsymbol{g}(t)) dt \right... | {} |
# Check my solution to system of equations?
I have the following system of equations that I wanted to solve:
$$2x_1+12x_2+16x_3=24\\ 7x_1+6x_2+4x_3=18\\ 3x_1+2x_2+8x_3=32\\ 9x_1+5x_2+10x_3=14$$
I tried arranging into matrix form:
$$AX=b$$
where
$$A= \left[ \begin{array}{ccc} 2 & 12 & 16\\ 7 & 6 & 4\\ 3 & 2 & 8\\ ... | {} |
9.3 Simplification of denominate numbers (Page 2/2)
Page 2 / 2
Practice set b
Perform each operation. Simplify when possible.
Add 4 gal 3 qt to 1 gal 2 qt.
6 gal 1 qt
Add 9 hr 48 min to 4 hr 26 min.
14 hr 14 min
Subtract 2 ft 5 in. from 8 ft 7 in.
6 ft 2in.
Subtract 15 km 460 m from 27 km 800 m.
12 km 340 ... | {} |
# A big sum
1. Feb 27, 2005
### damoclark
Can anyone help me with this sum
1^10 + 2^10 + 3^10 ......... +998^10 + 999^10 + 1000^10 = ?
I read that when Gauss was a kid at school he solved the simplier problem of summing all the numbers in his head between 1 and 100, before the teacher and all the other kids, by th... | {} |
Order KöMaL! Competitions Portal
English Issue, December 2002
Previous pageContentsNext pageORDER FORM
Interesting new characteristics of the electrostatic field
Balázs Pozsgay
There are many important and interesting characteristics of the electrostatic field, such as the spherical symmetry of the field of a poin... | {} |
# Representing Rational Numbers With Python Fractions
by Bartosz Zaczyński Oct 11, 2021 basics python
The fractions module in Python is arguably one of the most underused elements of the standard library. Even though it may not be well-known, it’s a useful tool to have under your belt because it can help address the ... | {} |
# Climate Science Reports (other than IPCC)
Climate Science Reports (other than IPCC)
----------------------------
Climate Science Reports 2009-2014
------------
US Climate Action 2014 Report
As reported HERE, the U.S. Department of State submitted the 2014 U.S. Climate Action Report on Thursday to the United Na... | {} |
Partially oriented yarn
fibre manufacturing
Alternative Title: POY
...a temperature no greater than about 70 °C [160 °F])—a process referred to as cold drawing. Other fibres, such as polyester, that are spun at extremely high rates yield what is known as partially oriented yarns (POY)—i.e., filaments that are partial... | {} |
What is the first 21-digit prime number after the decimal point of Pi
We know the recent computers are 64-bit, and the maximum integer number is 18446744073709551615, whether you can find the first 21-digit prime number after the decimal point of $\pi$?
-
You mean if we can find the first 21-digit prime in the decima... | {} |
# Math Help - change of base formula?
1. ## change of base formula?
Use the change of base formula then a calculator to evaluate
so i did change of base I think>? 9 ^42.11 then used the calculator and got 1.52?
2. Originally Posted by rj2001
Use the change of base formula then a calculator to evaluate
so i did chang... | {} |
# Items tagged with differentialdifferential Tagged Items Feed
### DEs and Mathematical Functions Updates...
May 06 2014
2 0
This is the first presentation of updates for the DE and Mathematical Functions programs of Maple 18. It includes several improvements, all in the Mathematical Functions sector, as well as som... | {} |
# How do I fix this? Freshly upgraded F21 clears logo and leaves screen blank.
Yes, I know F21 is 'end of life', but the author of Fedup always recommended upgrading one level at a time, so I used Fedup to go from F19 to F20, which worked well, then from F20 to F21, which does not. If I let it boot by itself, I see th... | {} |
## Background & Summary
Tropical forests provide vitally important ecosystem services and support valued biodiversity13. As a result there are many national and global policies seeking to reduce deforestation4,5. However, forest conservation can result in real costs to forest frontier communities, many of whom are poo... | {} |
## careless850 Group Title Solve for x in the proportion 2 years ago 2 years ago
1. careless850
$\frac {4x^{2}}{8x^{2}-8x} = \frac {2}{x}$
2. careless850
Last question for my assignment.
3. redshift
Have you learned cross-multiplication? If so: (x)(4x^2) = (2)(8x^2 - 8x) -expand -collect like terms -isolate for x... | {} |
Browse Questions
# True or False: In a LPP, the minimum value of the objective function $Z=ax+by$ is always 0 if origin is one of the corner point of the feasible region.
Toolbox:
• The objective function $Z=ax+by$,where $a$ and $b$ constants,which has to be minimized or maximized.
Step 1:
$m$ is the minimum value of... | {} |
## Solving piecewise set of 4th order homogeneous ODE...
Hi Maplers,
I'm struggling to write the correct code for this structural problem below.
The goal is to find the piecewise code for the horizontal deflection of a vertical beam (representing a offshore wind turbine) consisting of 5 segments. Below the EoM for t... | {} |
Calculating the error of Bayes classifier analytically
If two classes $w_1$ and $w_2$ have normal distribution with known parameters ($M_1$, $M_2$ as their means and $\Sigma_1$,$\Sigma_2$ are their covariances) how we can calculate error of the Bayes classifier for them theorically?
Also suppose the variables are in ... | {} |
# Tag Info
## New answers tagged font-encodings
5
You can use --no-fonts option to dvisvgm then it looks OK although all the text is SVG paths rather than real text.
2
I am not sure what your problem is. But I think if you just want a quick and dirty solution, you can just put a {} between f and i, i.e., f{}irst.
... | {} |
# 3.5 Addition of velocities (Page 2/12)
Page 2 / 12
## Take-home experiment: relative velocity of a boat
Fill a bathtub half-full of water. Take a toy boat or some other object that floats in water. Unplug the drain so water starts to drain. Try pushing the boat from one side of the tub to the other and perpendic... | {} |
3 years ago
# Density and $T_1$ of surface and bulk spins in diamond in high magnetic field gradients.
Martin de Wit, Tjerk Oosterkamp, Marc de Voogd, Gesa Welker
We report on surface and bulk spin density measurements of diamond, using ultra-sensitive magnetic force microscopy with magnetic field gradients up to 0.... | {} |
# Memory Management in R, and SOAR
May 8, 2012
By
(This article was first published on Data and Analysis with R, at Work, and kindly contributed to R-bloggers)
The more I’ve worked with my really large data set, the more cumbersome the work has become to my work computer. Keep in mind I’ve got a quad core with 8 gi... | {} |
# Infinite series question with z-transform addendum
Tags:
1. Dec 27, 2016
### kostoglotov
1. The problem statement, all variables and given/known data
Hello,
I am currently doing some holiday pre-study for signals analysis coming up next semester. I'm mainly using MIT OCW 6.003 from 2011 with some other web resou... | {} |
I was wondering what would be the best waveform to generate for a phased array short range imaging radar? Square, sine, etc. Also what frequency would be best to operate at for the carrier wave given that this radar wants to point out people and dimensions of say a building or forest. So seeing through walls is an obje... | {} |
## Problem on vector length
Find the length of the vector from $(2,4,5)$ to $(3, -1, -2)$.
• ## Solution
First we find the vector from $(2,4,5)$ to $(3,-1,-2)$. Then, we compute it's length.
Recall that
The vector from $(2,4,5)$ to $(3, -1, -2)$ is thus $$(3,-1,-2) -(2,4,5) = (1, -5, -7).$$
Recall that
The length of ... | {} |
Archive | Bacchus-Bosch
# An Adventure Game – Part 5
We’re rapidly approaching the end. This time we’ll implement a meta-language that makes it easier to create new games with the existing engine. Conceptually speaking we’re not adding anything new to the table, but the example game from the previous post was created... | {} |
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