How to I get Python 2.x and 3.x to co-exist?
Can I install Python 3.x and 2.x on the same Windows computer?
It seems i'm not gonna find an answer for this question which does not use LHopital's rule. How do you prove limit of (lnx)/x approaches 0 as x moves toward infinity WITHOUT using LHopital's rule? How to search a string in the list of answers added by me on Stack Overflow? I am able to view all the answers given by me and questions asked by me, but not able to search a string in them?  Currently I have no other choice than clicking each ques/ans link manually (very hectic) ? I am trying to under stand how to build a barrel shifter using multiplexers. I understand how the barrel shifter works but I don't get how you decide the number of multiplexers to use, and how the shifting is done with the multiplexer basically.  So far wikipedia doen't help much. And the best I have so far is   But it does not really answer my question. In the C and C++ programming languages, what is the difference between using angle brackets and using quotes in an include statement, as follows?   #include &lt;filename&gt;  #include "filename" How to get contact from stolen Android phone? I already read . And that answer did not work for me. I have explained it on the question.  My android phone was stolen. I need to get all contact of my phone. I had enable sync in that phone.  When I visit , it has only a very few contacts (seems like below 10% and all them has an email too). How can I get all contacts? DataTable merge without primary key column MapServer (MS4W) test page from shapefile shows only blank white square? I am trying to create a test page with mapserver and shapefile. At the moment I just want to get the map shown on my test page. I have gotten the EXTENT coordinates by opening shapefiles with QGIS - I am sure those are correct. I have followed this  as an example.  I am accessing my test page via this link:  http://localhost:1025/cgi-bin/mapserv.exe?map=C:\MS4W\ms4w\Apache\htdocs\mapfile.map   Problem I have - map is not loaded - I only see a blank white square.  When I look at contents of ms4w\Apache\htdocs\output , I see that images are actually getting generated but all of them are white (empty), for example:  lat_pmts_region13941906093724.png lat_pmts_region13941910095144.png lat_pmts_region13941913405500.png ...   Shapefiles are located at this location: C:\MS4W\ms4w\Apache\htdocs\shapefiles.  An example of what is logged to error file:  [Fri Apr 11 11:19:32 2014].883000 CGI Request 1 on process 7888 msWCSDispatch20(): wrong service (none) msWCSParseRequest(): request is KVP. msWCSDispatch(): SERVICE and REQUEST not included msDrawMap(): rendering using outputformat named png (AGG/PNG). msDrawMap(): WMS/WFS set-up and query, 0.000s msDrawMap(): Layer 0 (lat_pmts_region), 0.001s msDrawMap(): Drawing Label Cache, 0.000s msDrawMap() total time: 0.002s msSaveImage(C:/MS4W/ms4w/Apache/htdocs/output/lat_pmts_region13972043727888.png) total time: 0.138s [Fri Apr 11 11:19:33 2014].24000 mapserv request processing time (loadmap not incl.): 0.141s [Fri Apr 11 11:19:33 2014].24000 msFreeMap(): freeing map at 0246EFD8.   ms4w\Apache\htdocs\template.html:  &lt;html&gt; &lt;head&gt;&lt;title&gt;Mapserver Template HTML Document&lt;/title&gt;&lt;/head&gt; &lt;body bgcolor=#AAAAAA&gt; &lt;h2&gt;Template&lt;/h2&gt; &lt;img src="[img]" border=1&gt; &lt;/body&gt; &lt;/html&gt;   It looks like this:   C:\MS4W\ms4w\Apache\htdocs\mapfile.map:  MAP     CONFIG "MS_ERRORFILE" "C:/MS4W/ms4w/tmp/ms_error.txt"     DEBUG 5     NAME lat_pmts_region     STATUS ON     SIZE 800 600      EXTENT 286878.53 142087.25 799084.10 481123.75     #   lat_pmts_region      UNITS METERS     SHAPEPATH "shapefiles"     IMAGECOLOR 155 155 155      WEB     TEMPLATE "template.html"     IMAGEPATH "C:/MS4W/ms4w/Apache/htdocs/output/"     IMAGEURL "/output/"     END      LAYER     NAME "lat_pmts_region"     DATA lat_pmts_region     STATUS DEFAULT     TYPE POLYGON     END END   I will gladly provide more information if it's asked. DRAM Frequency showing 800 instead of 1600 I am running a Core i7 CPU originally at 3Ghz overclocked to 4Ghz using a multiplier of x20 and a Bus Speed of 200 Mhz  My memory is 1600 Mhz OCZ.  I installed CPU-Z to see what is going on - but it shows me (under the "Memory" Tab):  DRAM Frequency 800 Mhz  Channel Triple - NB Frequency 3800.2 Mhz  So what is the actual frequency its running on then? I am slightly confused. Story of lost tech but magic manifests I'm looking for this novel (or maybe a series of books?). I remember that technology began failing all over the world. Some people began transforming into different types of mythical creatures, like sprites, demons, etc. There was a band of about four travelers that were trying to make it to Chicago, since that seemed to be at the center of the issue. The story line frequently shifted the point of view in each new chapter. I vaguely recall a final battle in Chicago with an enormous and powerful demon creature. I think this demon used to be a corporate lawyer or big business guy before his transformation. I believe I read this in the early/mid 2000s, and was likely published around that time because of the types of tech used and failing in the story. Although it bears some surface similarity to the TV show, Revolution, they aren’t comparable in plot or characters. Uniform continuity of $f(x)=x^{2/3}\log x$ on $[0, \infty)$ Let $f$ be a real valued function on $[0,\infty)$ defined by  $$f(x)= \begin{cases} x^{{2}/{3}}\log x &amp; \text{ if } x&gt;0 \\  0 &amp; \text{ if } x= 0 \end{cases}$$  Then which of the following is true?  A. $f$ is discontinuous at $x=0$.  B. $f$ is continuous on $[0,\infty)$, but not uniformly continuous on $[0,\infty)$.  C. $f$ is uniformly continuous on $[0,\infty)$.  D. $f$ is not uniformly continuous on $[0,\infty)$, but uniformly continuous on $[1,\infty)$.  I could see that $f(x)=x^{\frac{2}{3}}\log x$ is continous at $x=0$   But for uniform continuity I thought boundedness of derivative would help   But I found $f'(x)=\frac{2}{3}x^{-\frac{1}{3}}\log x + x^{-\frac{1}{3}}$   This $f'(x)$ is not bounded so i can not say any thing about uniform contunuity.  Please help me to clear this.   Thank you :)  P.S : This was already asked before ( some other person but it was not having enough details so it got closed. I tried to edit that question but someone said I should not edit OP to add more details. I was afraid that may be against the rules of MSE. So, I thought i should ask this separately with my own ideas. Show that $\mathbb{Q}(\zeta_n)$ is Galois over $\mathbb{Q}$ and $Gal(\mathbb{Q}(\zeta_n)/\mathbb{Q}))\cong \mathbb{Z_n}^*$ Question 1: For $n \in \mathbb{N}$ explain why $\mathbb{Q}(\zeta_n)$ is Galois over $\mathbb{Q}$   We must show that it is normal and separable.   $\mathbb{Q}(\zeta_n)/\mathbb{Q}$ is normal since it is a splitting field for $X^n-1 \in\mathbb{Q}[X]$ (I think... Is this correct?).  It is separable because it is of characteristic $0$  Question 2: $Gal(\mathbb{Q}(\zeta_n)/\mathbb{Q}))\cong \mathbb{Z_n}^*$  Is this because the primitive nth root of unity $\zeta_n$ acts as a generator for a cyclic group? I am unable to fill out a decent proof on this.   Thanks for your help What are good starting settings to store for exposure bracketing shots? I started experimenting with the Custom Functions (C1,C2,C3) on my Canon 7D and I decided a useful one to have may be setting it up for exposure bracketing. So it's a quick switch if I ever need it, as opposed to going through the menu to set it up.  I realize the settings would vastly depend on the situation, but do you have any suggestions for some good all round settings to program in as a starting point?    Examples: 1 stop vs 1 1/3 vs 2 stop brackets / ISO choices / Metering mode / shooting mode and so on. How can I have colored and underlined links with hyperref? I would like the internal hyperlinks generated by  to be colored and underlined.    Reading some of the package documentation, I know that these \hypersetup keys exist:   colorlinks: when true, color the link; when false, draw a border around the link and color that. linkcolor: the color of the link (requires colorlinks=true to have any effect) linkbordercolor: the color of the link border color (requires colorlinks=false to have any effect) pdfborderstyle: keys for the pdf borderstyle dictionary.  I don't know what keys and values exist for this dictionary, but I do know that pdfborderstyle={/S/U} or pdfborderstyle={/S/U/W 1} can change the link border from a box to an underline.   But it seems impossible with this key structure to have colored links (requiring colorlinks=true and colored borders (requiring colorlinks=false.)  Here is a minimal (non)-working example ():  \documentclass{article} \usepackage{xcolor} \usepackage{hyperref}  \hypersetup{colorlinks=false,linkbordercolor=red,linkcolor=green,pdfborderstyle={/S/U/W 1}}  \begin{document} \section{To See}\label{tosee} \vskip2cm \hyperref[tosee]{just to see} \end{document}   With colorlinks=false (the default), the text is black and the border is red.  With colorlinks=true the text is green and there is no border. Using NPN transistor as switch It would be nice to update the profile page from within the app.  Perhaps not many people update their profiles more frequently, but when required to do so, I would prefer to do it from the app instead of the mobile browser. Let $F:\mathbb{R^2}\rightarrow \mathbb{R}$ be a function, such as : $$F(x,y)=\begin{cases}        0 &amp; (x,y)=(0,0) \\       \frac{xy}{x^2+y^2} &amp; (x,y)\neq (0,0)    \end{cases}$$      Is $F$ differentiable at $(0,0)$?   My attempt :  Consider the limit, $\lim_{(x,y)\rightarrow (0,0)} F(x,y)$ along the line $y=x$. The limit equals to $\frac{1}{2}$. However, $F(0,0)=0$. Hence $F$ is not continuous at $(0,0)$ which implies that $F$ isn't differentiable as well.  Is this approach okay ? So I know I've heard this saying in American English before but I just can't quite find the original.  I have come up with several made up variations like:   I don't send the Navy (or whole army, or a battalion) when all you need is a diplomat. Don't buy the whole cow when all you need is milk.   What's the more commonly heard saying/phrase for this of expression? This one never ceases to confuse me. When to use 'such as' and when to use 'like' while giving examples? Is there any clear rule?        Metros like Mumbai, Delhi and Karachi are unsafe after dark.    Metros such as Mumbai, Delhi and Karachi are unsafe after dark.       (Before anyone points out, Delhi and Karachi are unsafe round-the-clock, but it's just an example.) Is propagation of uncertainties linear? I'm in doubt with one thing: let's imagine that we have $n+1$ quantities, $n$ of them being directly measured, and the other one being related to the first $n$ by a function $f : \mathbb{R}^n \to \mathbb{R}$. If the $x_i$ is one of the quantities being directly measured and if $\Delta x_i$ is it's uncertainty, then I've learned that the uncertainty of the quantity $y = f(x_1, \dots x_n)$ is given by:  $$\Delta y=\sum_{i=1}^{n}{\frac{\partial f}{\partial x_i}\Delta x_i}$$  My problem in understanding this is: well, if $f$ is such a function, it's derivative is the linear transformation $df : \mathbb{R}^n \to \mathbb{R}$ given by:  $$df=\sum_{i=1}^{n}\frac{\partial f}{\partial x_i}dx_i$$  Where $dx_i : \mathbb{R}^n \to \mathbb{R}$ is given by $dx_i(a_1 \dots a_n) = a_i$. Hence, what we are saying, is that $\Delta y = df ( \Delta x_1, \dots \Delta x_n)$, in other words, we are saying that the uncertainty of $y$ is given by a linear function of the vector of uncertainties of the quantities $x_i$. Why should that be true? I mean, what's the reasoning behind this? I really didn't get the point, my teacher just gave the equation without justifying or anything like that.  Any help and reference is appreciated. Understanding minipages - aligning at top I would like to be able to align two minipage at the top, without worrying about what is in the minipage.  I am aware of the optional [t] parameter, but still have some confusion as to how this all works.  I tend to think of a minipage as a regular page in that whatever is placed on it starts at the top and fills the page going across and then down the page, but this does not appear to be the case.  In the MWE example below, I have color coded the sections for reference purposes.   The first case (black) works just as I would expect. The two minipages are aligned exactly as I want with the [t] specifier.  No question here.  The next case (red) only works if the inner minipage also has the [t] specifier. Why is that necessary?  I would have thought that any content would be placed at the top of this page, and since both the outer minipage had a [t] things should have aligned at the top. I would like to place a graphic in the second mini page, and still have the two aligned at the top.   The simple case (blue) of using \includegraphics directly does not result in the content being aligned at the top.  So, then I attempt to put this in a \parbox (green) and this too does not yield the desired results.  I also try to place the graphic inside an inner minipage (brown) and specify the [t] alignment, and even though this worked in the red section, it does not here.  The only difference between the red and brown being that the red section had text, whereas the brown section has a graphic.  I am aware of question regarding  which suggests to place \vspace{0pt} at the top of the minipage, and that does provide the desired alignment (cyan), but adds vertical space at the top.  So, my second question is why is the \vspace{0pt} necessary when a graphic is included, but not when it is text.  This appears to be a hack and wondering if there is a replacement for minipage that works better without having to worry about exactly what is in the minipage?  Also, why did wrapping the figure in a parbox (green) or another minipage (brown) not solve this problem?   Here is the MWE:  \documentclass{article} \usepackage[demo]{graphicx} \usepackage{lipsum} \usepackage{xcolor}  \begin{document} \section{This Works - Aligned at top as desired} \begin{minipage}[t]{0.6\linewidth}     \lipsum[1] \end{minipage} \hfill \begin{minipage}[t]{0.3\linewidth}     \lipsum[2] \end{minipage}  \color{red} \section{Why does inner mini page required the [t]?} \label{Minipage-in-minipage} \begin{minipage}[t]{0.6\linewidth}     \lipsum[3] \end{minipage} \hfill \begin{minipage}[t]{0.3\linewidth}     \begin{minipage}[t]{\linewidth}% Why is [t] required here         \lipsum[4]     \end{minipage} \end{minipage}  \color{blue} \section{Why are These not aligned at top?} \begin{minipage}[t]{0.6\linewidth}     \lipsum[3] \end{minipage} \hfill \begin{minipage}[t]{0.3\linewidth}     \includegraphics[width=\linewidth]{foo} \end{minipage}  \color{green} \section{Why are These not aligned at top?} \begin{minipage}[t]{0.6\linewidth}     \lipsum[3] \end{minipage} \hfill \begin{minipage}[t]{0.3\linewidth}     \parbox{\linewidth}{\includegraphics[width=\linewidth]{foo}} \end{minipage}  \newpage \color{brown} \section{Why does this not work with the [t] as it did in red section?} This worked fine in Section \ref{Minipage-in-minipage}  \begin{minipage}[t]{0.6\linewidth}     \lipsum[3] \end{minipage} \hfill \begin{minipage}[t]{0.3\linewidth}     \begin{minipage}[t]{\linewidth}% Even with [t] here, this does not work         \parbox{\linewidth}{\includegraphics[width=\linewidth]{foo}}     \end{minipage} \end{minipage}   \color{cyan} \section{Adding a \textbackslash{}vspace\{0pt\} works} \begin{minipage}[t]{0.6\linewidth}     \vspace{0pt}% Hack!! But does do the job     \lipsum[3] \end{minipage} \hfill \begin{minipage}[t]{0.3\linewidth}     \vspace{0pt}% Hack!! But does do the job     \begin{minipage}[t]{\linewidth}% Why is [t] required here         \parbox{\linewidth}{\includegraphics[width=\linewidth]{foo}}     \end{minipage} \end{minipage} \end{document}