Pdf Definition and 328 Threads

I am trying to copy the contents of this PDF into another document (it doesn't seem to matter which document type). No matter how much or how little I copy into the clipboard, no matter whether I paste it into a text editing field - an email, or notepad - I get the same thing: The text I'm...

Changing jobs for the first time in a decade is requiring me to have an up-to-date LinkedIn profile. All my previous content is gone. I guess it expires? Anyway, I should be able to upload a PDF and have it auto-populate my profile - but that function does not work as expected. Here is what I...

Some python function f(x) defines an (unnormalised) pdf between x_min and x_max and say we want to draw x randomly from this distribution if we had the CDF F(x) and its inverse F^{-1}(x), we could take values y uniformly in [0,1], and then our random values of x would be x = F^{-1}(y). but...

The above theorem is trying to find the pdf of a transformed random variable, it attempts to do so by "first principles", starting by using the definition of cdf, I don't understand why they have a ##f_X(x)## in the integral wouldn't ##\int_{\{x:r(x)<y\}}r(X) dx## be the correct integral for the...

I like digital textbooks, and the ones I'm studying now are in PDF format. I really need an app I can use across all my interfaces (windows desktop and laptop, a tablet, and iphone) that I can bookmark and annotate with? I have seen a few readers mentioned online, but it needs to be an app so...

This is part of my note: Now, this is practice question: I want to ask why P(X = 2) is not zero, because from the note: P{X = a} = ##\int_{a}^{a} f(x) dx=0## ? If I differentiate F(x), I will get f(x) which is the pdf, then using the pdf to find P(X = 2), I think I will get zero as the...

As described. I want to convert word doc to pdf. I know there are free converter online and all. I want suggestion on a safe proven that people here use. Thanks

I am applying to several universities for Masters. The universities are asking me to compress all the required documents into a single 5 MB file. I have to submit my 10th and 12th standard marksheets and gradesheets, along with their reverse side. These documents are around 5 MB each because...

Multivariable calculus is a branch of mathematics that extends the concepts of single-variable calculus to functions of multiple variables. In this subject, vectors and partial derivatives are introduced to represent and manipulate multi-dimensional data. The gradient of a function represents...

Homework Statement:: Recommend PDF books Relevant Equations:: . Hi, I'm a second-year physics student and my uni doesn't have any study material in the syllabus. Only lectures. I want to learn more. Can you recommend to me a good mathematics pdf book that is about calculus? General topics...

we haven't learned howw to do parts d-f yest. could you please give me a hand? (a) $$E(X)=E(Y)=\int_0^3\int_0^3\frac{1}{9}dxdy=\frac{3}{2}$$ (b)its typoe suppoesed to be W=Y-2 $$E(Z)=E(X-2)=E(X)-E(2)=-\frac{1}{2}$$ $$E(W)=E(Y-2)=E(Y)-E(2)=-\frac{1}{2}$$ (c) i guess joint pdf from ##E(Z)## and...

I don't understand the attached image, which shows the structure-function of the proton, for the cases of 1. point-like particle 2. 3 non-interacting quarks 3. 3 quarks interacting via gluons 4. valence and sea quarks interacting via gluons Can someone please explain this to me? I would greatly...

I'm using Visual Studio Code as my text editor. My ultimate goal is to use PythonTex in a Latex file so that I can generate multiple versions of the same worksheet for my class. As a test, I defined a variable myvar = "hi" but I can't get it to render correctly in the pdf when I use \py{myvar}...

Hi All I am currently doing Master in data science. I came across the function PDF probability density function which is used to find cumulative probability(range) of a continuous random variable. The PDF probability density function is plotted against probability density in y-axis and...

For instance if we are given only a PDF in the form of ##p(x)##, how can one calculate the characteristic function, the mean, and the variance of these PDF's ? Any site or explanation will be enough for me

I need a good pdf editor for Linux. It can be free or paid. My budget is USD 70. Preferably a perpetual licence. It would be great if the software has a trial version, which will enable me to determine whether it suits my needs. It should have the following capabilities: insert/edit text OCR...

Hi, I have a quick question about something which I have read regarding the use of dirac delta functions to represent conditional pdfs. I have heard the word 'mask' thrown around, but I am not sure whether that is related or not. The source I am reading from states: p(x) = \lim_{\sigma \to...

If we have 'N' advanced computers (where N-> infinity) each with exactly the same rating to begin with and make them play with each other for an infinite number of games, what would the shape of the probability density function of the ratings eventually look like?

Hello, I am looking for some softwares that can convert htlm files into pdf and join them. I know Adobe Reader can do this and there are online converters but I am looking for alternatives of Adobe and offline options. Can you please recommend one if you know any? Thank you.

Hi I need to merge two big pdf files together, as usual when I tried to scan a stack of papers into pdf files, my "beloved" Canon all-in-one determined to make it more interesting for me and jammed a few pages before completing the job. Now I have two files that I want to combine into one...

Lately I have been receiving pdf files ( with Adobe sign) that I cannot open with my Adobe reader. I have no problem with all the Adobe pdf I have, just those from that sender. The error message is: When I click OK, I have this message: I tried all the options, got nowhere. Anyone know...

Suppose we have a function which looks like this: It seems like it meets criteria of probability density functions: this function is asymptotic to zero as x approaches infinity and also it is not negative. My question is: if at some points this function reaches zero (as I have shown above)...

Hi PF! Does anyone know of a LaTeX editor that outputs white equations for powerpoints, etc.? I'm running a Mac, and currently use LaTeXiT, but I can't seem to get this to work for white output.

https://documentcloud.adobe.com/link/track?uri=urn%3Aaaid%3Ascds%3AUS%3A4882882a-63fb-4f57-aefe-154f82d8c04e this a pdf of an attempt to produce AP Calculus matching questions on a PDF I am using overleaf thanks much you might have down load the pdf from the browser then open it in Acobat...

Homework Statement For $$f_x(x)=4x^3 ; 0 \leq x \leq 1$$ Find the PDF for $$ Y < y=x^2$$ The Attempt at a Solution So, we take the domain on x to be: $$0\leq x \leq \sqrt y$$ and integrate: $$ \int_0^{\sqrt y} f_x(x) dx = \int_0^{\sqrt y} 4x^3 dx$$ Do we integrate with respect to x or y...

Hi all, I was wondering if there exist any theorems that allow one to relate any joint distribution to its marginals in the form of an inequality, whether or not ##X,Y## are independent. For example, is it possible to make a general statement like this? $$f_{XY}(x,y) \geq f_X (x) f_Y(y)$$...

There are some PDF files where Google finds keywords, but when I open the link Google gives, the PDF isn't searchable by any tools I've tried ( such as the search feature of Firefox). If I save the PDF to a file, I can't search it with the linux commands grep and pdfgrep. Example...

Since the move to the new servers, many (all?) PDF files have defaulted to Download or Save. Prior to this, as is standard on other sites, PDFs defaulted to View. Rather annoying. Fortunately my browser is configured to Always Ask, but it is still an extra action required. Others have also...

Im carefully studying Deep Inelastic Scattering and I have the doubt if valence quarks are real physical entities or if they are just a way we can think hadrons are built. I understand that inside hadron we have the Parton Distribution Functions that say that there are an infinite number of...

I want to find the probability density function (pdf) of the difference of two RV's, p_{\Delta Y} = p_{(Y_1 - Y_2)},where y = \sin \theta, and where \theta_1 and \theta_2 are random variables with the same uniform distribution p_{\theta}=\mathrm{rect}\left(\frac{\theta}{\pi}\right). This has...

Hi, I have a really simple CSV with some data that needs to be visualized all together in a single page . The CSV content is basically 4 columns wide with short names and small numbers in the cells so I need to create a layout where the list goes from the up left corner of the page to the...

Homework Statement Pedestrian are arriving to a signal for crossing road with an arrival rate of ##\lambda## arrivals per minute. Whenever the first Pedestrian arrives at signal, he exactly waits for time ##T##, thus we say the first Pedestrian arrives at time ##0##. When time reaches ##T##...

As the title, I need to install a pdf reader. I use PrimoPDF in all my other laptops. BUT when I try to install onto my new Win10 laptop, Norton kept deleting it and said it's not safe. So I need to find another one that is not a scam. Any suggestions? Thanks

Hello guys, and sorry for my english in advance. I was presented some time ago with the following problem: Suppose there is a frog that jumps in any direction randomly, and all the jumps have size 1. What's the probability of, after 3 jumps, the frog be less than 1 unit from the origin. I...

Homework Statement Consider a continuous random variable X with the probability density function fX(x) = |x|/5 , – 1 ≤ x ≤ 3, zero elsewhere. I need to find the cumulative distribution function of X, FX (x). 2. Homework Equations The equation to find the cdf. The Attempt at a Solution FX(x)...

If you are familiar with pdf readers which one do you advise? Which one has the friendly interface and is practical? http://www.techradar.com/news/the-best-free-pdf-reader 1) Adobe Reader 2) Foxit Reader 3) Nitro PDF Reader 4) PDF-XChange Editor 5) Slim PDF Reader 6) Icecream Ebook Reader...

In the green box in the attachment I have calculated the integral of the pdf of 24xy in the same manner as in the theory that leads up to 3.1 in the attachment. But I can't see any difference in that calculation that would explain that if 24xy is dependent why is not also the theory that leads...

\documentclass[12pt]{article} \usepackage{graphicx} \addtolength{\textwidth}{1.5in} \addtolength{\hoffset}{-1.in} \addtolength{\textheight}{2.0in} %\addtolength{\voffset}{-1.68in} \addtolength{\voffset}{-0.8in} \newcommand {\rreal}{\mbox{$R\!\!\!\!\!l\,\,\,\,$}}...

Homework Statement Let $$ \it{f}(x) $$ be a probability density function. Now let Xn have the density: $$ \it{f}_{n}(x) = n\it{f}(nx) $$ Determine whether or not Xn converges in distribution to zero. (this is the verbatim statement, there is no additional information given)Homework...

Homework Statement I was hoping someone could just verify this solution is accurate. p(x) = 0 , x < 0 4x, x < .5 -4x + 4 , .5 <= x < 1 Find CDF and Inverse of the CDF. Homework EquationsThe Attempt at a Solution CDF = 0 , x < 0 2x^2 ...

To all who are interested in a source for the treatment of partial differential equations: Victor Ivrii, Toronto, Course notes, 310 pages https://www.ams.org/open-math-notes/omn-view-listing?listingId=110703&utm_content=buffer2458a&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer

Anyone willing to share a pdf of 'Higher Math for Beginners' by Ya. B. Zeldovich ? The link for this text at archive.org seems to be broken for the time being. Many thanks in advance... Harlan

Recently I installed the more recent version of Adobe Digital Editions (the new one is 4.5. I had 3.0 -- in fact, I still have also 3.0, as I am not sure whether I can discard 3.0, since 4.5 took over files from 3.0). But then I saw that many of the pdf files on my computer (which were not Adobe...

Homework Statement f(xy)=49/8*e^(−3.5*y) 0 < y < inf and −y < x < y 0 otherwise a. Find the marginal probability density function of X, fX(x). Enter a formula in the first box, and a number for the second and the third box corresponding to the range of x. Use * for multiplication, / for...

Homework Statement I need to find the pdf of sum of "n" iid non central chi-square distributed RV's. Homework Equations The PDF of the non-central chi-square RV is given herehttps://en.wikipedia.org/wiki/Noncentral_chi-squared_distribution The Attempt at a Solution i tried to find the...

Hi all, I was trying to find an answer, but couldn't, what is the integral of the squared probability density function? It doesn't seem to be equal to the square of cumulative distribution function, but how to tackle it? ∫(f(x))2dx = ? Can we transform it into, say, ∫f(x)dF(x)? and then...

Hi guys, I am currently having a problem in converting, my .f90 and .txt and output files into a single pdf. Dose anyone have any ideas?

hi, do you happen to know any app for iOS that can create pdf-s by writing LaTeX. I know of Texpad and Texwriter but don't know if they can create pdf-s from the code you write. Any help?

I have a PDF file which has a weird dark yellowish background that renders it unreadable when printed in grayscale. I am not interested in the yellow background I just want black text from the PDF. I want to do this for a quite a large number of PDFs so I want a process that is either...

I have a PDF file in which different pages are of different size because I made it up from images of different sizes. For printing purpose I want all the pages to be of A5 size, How can I do that ? Sorry if this is silly but I have no experience in working with PDF, this is the first time I...