i cant find how to install the .ISO file of ubuntu 16.04. it shows me only the 18.04 version. thank you.
I am unable to find the link for downloading Ubuntu 16.04 onto my   desktop/laptop. I am able to see the link only for 18.04, but I need 16.04.
Getting two pictures to appear on the same page We're using list view and details OnClick Javascript buttons which reference custom js ans css files stored in static resources and containing some shared logic/styles. The sample code below demonstrates how they are referenced.  {!REQUIRESCRIPT('/resource/CustomJQuery/js/jquery-1.10.2.js')}  {!REQUIRESCRIPT('/resource/CustomLib')}  $("head").append($("&lt;link rel='stylesheet' href='/resource/CustomJQuery/css/smoothness/jquery-ui-1.10.4.custom.css' type='text/css' media='screen' /&gt;"));   These files are also referenced in Visualforce pages.  Introduction of "Serve Static Resources from force.com domain" critical update breaking this way of using static resources in OnClick Javascript buttons - there is also Known Issue created for this .  So, my questions are:  1) Are there any ways to make it work with "Serve Static Resources from force.com domain" critical update activated. My assumptions for now are below, but they seem to be risky and may require significant changes:   hosting these js and css files on own server and referencing them in OnClick Javascript buttons and all other places; move to custom visualforce pages;   2) Does anyone know what's going on with "Serve Static Resources from force.com domain" critical update right now? It was scheduled in Winter 15 first, then it was postponed to Summer 15. Now it can't be found in any org in list of all critical updates at all. It has even disappeared from the list in orgs where it used to be 1-2 weeks ago.  3) How long Known Issue can be "In review" status, since related one has this status for more than 2 months?  Thank you Moment generating functions/ Characteristic functions of $X,Y$ factor implies $X,Y$ independent. This is solely a reference request. I have heard a few versions of the following theorem:     If the joint moment generating function $\mathbb{E}[e^{uX+vY}] = \mathbb{E}[e^{uX}]\mathbb{E}[e^{vY}]$ whenever the expectations are finite, then $X,Y$ are independent.   And there is a similar version for characteristic functions. Could anyone provide me a serious reference which proves one or both of these theorems? Can you deliver it [when,after] it [is | will be] assembled? Right now we are assembling a device. I am asking another person if he is can deliver it [after/when] we finish. What question construction is the most correct?  Can you deliver it after it is assembled?  Can you deliver it after it will be assembled?  Can you deliver it when it will be assembled?  Can you deliver it when it is assembled? It is given that $X,Y \overset{\text{i.i.d.}}{\sim} N(0,1)$  Show that $\frac{XY}{\sqrt{X^2+Y^2}},\frac{X^2-Y^2}{2\sqrt{X^2+Y^2}} \overset{\text{i.i.d.}}{\sim} N(0,\frac{1}{4})$  I was thinking of making polar transformations $X=r \cos \theta, Y=r \sin \theta$  Then I am getting stuck at ranges of $\theta$ Why does the Lasso provide Variable Selection? I'm looking for a way to prove $$\sum_{n=0}^\infty\frac{(-1)^n}{(2n+1)^{2m+1}}=\frac{(-1)^m E_{2m}\pi^{2m+1}}{4^{m+1}(2m)!}$$ I know that $$\sum_{n=0}^\infty\frac{(-1)^n}{(2n+1)^{2m+1}}=\frac{1}{4^{2m+1}}\left(\zeta\left(2m+1,\frac14\right)-\zeta\left(2m+1,\frac34\right)\right)$$ so maybe I could simplify the above more? Display number with leading zeros Given: a = 1 b = 10 c = 100  How do I display a leading zero for all numbers with less than two digits? This is the output I'm expecting: 01 10 100 What is the right first step to take when integrating $1/(2+ \sin x + \cos x)$? I want a hint on this following integral. I don't know the first step, do I do $u$-sub. or do I use trig. sub or something?  $$\int \frac{1}{2+ \sin x + \cos x} ~\mathrm{d}x$$ Doubt regarding a limit which is related to MVT Let the function $f(x)$ be differentiable  and $f'(x)$ be continuous in $\left(-\infty,\infty \right)$ with $f'(2)=14$ then evaluate the limit  $$\lim_{x\to 0}\frac{f(2+\sin x)-f(2+x\cos x)}{x-\sin x}$$  My attempt:  $\lim_{x\to 0}\frac{f(2+\sin x)-f(2+x\cos x)}{x-\sin x}$  $\lim_{x\to 0}\left(\frac{f(2+\sin x)-f(2+x\cos x)}{\sin x-x\cos x}\right)$ $\frac{\sin x-x\cos x}{x-\sin x}$$=\left(f'(2)\right)(2)=28$  Is the method used here correct $ a+b+c+d=6 , a^2+b^2+c^2+d^2=12$ $\implies$ $ 36 \leq 4(a^3+b^3+c^3+d^3)-(a^4+b^4+c^4+d^4) \leq48 $ Let $a , b, c, d$ be real numbers such that $$ a+b+c+d=6 \\ a^2+b^2+c^2+d^2=12$$  How do we prove that $$ 36 \space \leq\space 4(a^3+b^3+c^3+d^3)-(a^4+b^4+c^4+d^4) \space\leq48\space$$ ? How can I modify the size of swap with LVM partitions? I'm trying to add/modify a swap partition on my LVM-formatted hard disk by using GParted from a LiveCD.  I only see one big partition taking up the whole disk.    Is there a hidden swap?    Does an LVM-formatted system even need a swap?  I'm using Ubuntu 12.10. Command substitution: splitting on newline but not space I know I can solve this problem several ways, but I'm wondering if there is a way to do it using only bash built-ins, and if not, what is the most efficient way to do it.  I have a file with contents like  AAA B C DDD FOO BAR   by which I only mean it has several lines and each line may or may not have spaces.  I want to run a command like  cmd AAA "B C DDD" "FOO BAR"   If I use cmd $(&lt; file) I get  cmd AAA B C DDD FOO BAR   and if I use cmd "$(&lt; file)" I get  cmd "AAA B C DDD FOO BAR"   How do I get each line treated a exactly one parameter? Extracting usernames from the /etc/passwd file Adding HTML entities using CSS content How do you use the CSS content property to add HTML entities?  Using something like this just prints &amp;nbsp; to the screen instead of the non-breaking space:  .breadcrumbs a:before {     content: '&amp;nbsp;'; } What's the typical microclimate in the aircraft passenger cabin? The mediation package in R returns results in which:   Average Direct Effect (ADE) (the unmediated effect) is not statistically significant The Average Causal Mediated Effect (ACME) (the effect of the mediator alone) is positive and statistically significant The Total Effect (ADE+ACME) is larger than the ADE and ACME alone, positive and statistically significant   Does this indicate that the variable being mediated can only act through the mediator DV? I'm not quite certain as to how this would be interpreted.  Thank you for any help. Do the *Result objects in Database have a common ancestor? I'm doing some polymorphic programming, and I decided that I wanted to be able to gracefully handle partial saves using SaveResult without blocking the user experience. The code looks roughly like this:  static void logDmlErrors(SObject[] src, SObject[] dest, SaveResult[] results, String message) {     // Transform results into Chatter error messages, send them to admins }   I then went about writing the utility methods that would use this function:  public static void insertRecords(SObject[] src, SObject[] dest, String message) {     logDmlErrors(src, dest, Database.insert(dest, false), message); }   Everything went well, until I came across the delete and undelete methods, which instead use DeleteResult and UndeleteResult. Both of those two classes contain the exact same methods as SaveResult, and yet don't appear to inherit from a common ancestor. This means that I can't just cast to a super-type to get to this information.  Thankfully, Summer 16 apparently introduced support for serializing (and deserializing) these classes as JSON, so I do have a fairly expensive (but accurate) workaround if I want proper polymorphic behavior, but I thought I'd throw it out there and see if someone has an alternative solution to this problem. As a result, I am able to be understanding and accommodating to the people that I work with, including clients, which I believe is an important asset for a professional to have.   I wanted to make sure it is absolutely known that I mean to acknowledge clients as a class of people I can work with. Is this the right way to include it with commas? I'm having some difficulty understanding how to interpret variable importance output from the Random Forest package. Mean decrease in accuracy is usually described as "the decrease in model accuracy from permuting the values in each feature".   Is this a statement about the feature as a whole or about specific values within the feature? In either case, is the Mean Decrease in Accuracy the number or proportion of observations that are incorrectly classified by removing the feature (or values from the feature) in question from the model?   Say we have the following model:  require(randomForest) data(iris) set.seed(1) dat &lt;- iris dat$Species &lt;- factor(ifelse(dat$Species=='virginica','virginica','other')) model.rf &lt;- randomForest(Species~., dat, ntree=25, importance=TRUE, nodesize=5) model.rf varImpPlot(model.rf)     Call:  randomForest(formula = Species ~ ., data = dat, ntree = 25,  proximity = TRUE, importance = TRUE, nodesize = 5)  Type of random forest: classification Number of trees: 25 No. of variables tried at each split: 2          OOB estimate of  error rate: 3.33% Confusion matrix:           other virginica class.error other        97         3        0.03 virginica     2        48        0.04     In this model, the OOB rate is rather low (around 5%). Yet, the Mean Decrease in Accuracy for the predictor (Petal.Length) with the highest value in this measure is only around 8.   Does this mean that removing Petal.Length from the model would only result in an additional misclassification of 8 or so observations on average?   How could the Mean Decrease in Accuracy for Petal.Length be so low, given that it's the highest in this measure, and thus the other variables have even lower values on this measure?