Evaluate $\int \frac{dx}{(x^2-x+1)\sqrt{x^2+x+1}}$
Compute the integral $\int\frac{dx}{(x^2-x+1)\sqrt{x^2+x+1}}$
Delay answer downvote rep loss to voter to help hide voter's identity A while back, I posted an answer to SO, which was downvoted.  I wasn't sure who did it, but had a suspicion because I thought I had seen a particular user lose a reputation point.  When I deleted the answer, my suspicion was confirmed by a point gain in reputation by the particular user.  Now, I wasn't going to attempt any sort of retaliation (and did deserve the downvote) but this seems like it could lead to abuse.  My suggestion is to apply answer downvote rep loss/gain at a particular time of day, and not immediately after the vote or answer deletion. Can anyone help me out with this,    This is from a custom object " Quotation", The look up field " Main Driver" is a look up to Personal account object. The below fields are as well exists in the personal account. I need whatever value would be choosen in the main driver, automatically the below values will get pop up.  I amm trying to write a trigger for this, but just got stuck, Error showing as,      Error: Compile Error: Variable does not exist: Account.Age__c at line   7 column 17   How can i define the Account variable in the Quotation object trigger ?  trigger MainDriverRelatedFields on Quotation__c (before insert,before update) {      for(Quotation__c obj : Trigger.new){          if(obj.Main_Driver__c!=null) {              obj.AgeMainD__c=Account.Age__c;              obj.GenderMainD__c=Account.Contact_Individual_Gender__c;          }      }  } Simple Hadamard Circuit gives incorrect results? Show that is $\int_A f$ exists, then so does $\int_A |f|$ Let $f$ be a real-valued function on $A$ in $E^n$. Show that is $\int_A f$ exists, then so does $\int_A |f|$ and $\left | \int_A f\right | \le \int_A |f|$.   I am trying to finish Rosenlicht's Introduction to Analysis and the last chapter is awful. But I do want to finish it because I have come this far. Could someone show me how to do this, so I can at least have some example problems to understand the material. This chapter (Multiple Integrals) really just left more confused than before I started reading the chapter.  Thank you in advance. Re-mounting an un-mounted USB stick Infinite Volume but Finite Surface Area Is there any pathological shape that has a finite surface area but an infinite volume? Sort of like the opposite of a Gabriel's horn. How to replace the first occurence in an expression instead of replacing all? Google street view URL Hi I have the address of a property and my application can launch a browser to go to . If a good match is found it will take it directly there. Is there any thing I can append to the url to make it switch to streetview without having the exact coordinates? I dont't want to code any javascript or flash. Area 51 Site is quite different from other SE sites and needs an SE footer Honestly, navigation through Area 51 is a bit confusing and seems to be much different from the other SE sites.    The feature that is very lacking is the footer with all the sites you are subscribed to so that a user can easily return to a different SE site. This one really bugs me.  Can this be easily fixed?  Also, unlike all the other sites there is no "meta" site to add comments specifically about that site.    Again Area 51 seems out of sync with the other SE sites. https:// search results appearing on Google for purely http:// site A gateway to a new world/future where things can be improved with use This book is about an explorer (with robot companion) who walks through a "gateway" into the future/parallel world. In this world, things that are created do not fall into disrepair, instead things get better.  The main character is kidnapped early on in the story and forced to labor by beating the outside of a castle with a spear. It is explained to him that this makes the wall better and able to resist attacks by these weapons. In his cell, he meets a man wearing an extravagant shirt and asks about it and the man explains to him that the shirt has been in his family for several generations, which is why it looks so nice.   To escape from the jail cell, the man tears one of his zippers from his jump suit and uses it like a saw to cut a hole in the wall. He escapes with the man in the fancy shirt and a woman.   The woman, is something special in this world. (She can focus on the change that is happening to an item and somehow enhance or speed up the process)  The man makes a wheeled cart for them to escape in. While the wheels are at first rough and wobbly, they soon "become better" and spin better. I've read the , and I don't get it. I am really interested, but I've read the explanation there a couple of times and I still don't get it how the Duff's device works.  What would a more detailed explanation be? How do I create a decimal field in Access with Alter Table? Why won't SparseArray let me store values with the head List? Can somebody please explain when parent process receives the exit status of a dead child process via wait, who actually reallocates the memory of the child process and removes it from the process table? Can Superman see through his eyelids? How can I reliably and accurately identify the passive voice in writing or speech? Equation mode, labelling equations I have the following   \[K^{-1}\left\|\sum\limits_{n=1}^N a_ny_n\right\|    \leq \left\|\sum\limits_{n=1}^N a_nx_n\right\|    \leq K\left\|\sum\limits_{n=1}^N a_ny_n\right\| (\dagger)\]   But the dagger doesn't appear at the right hand end of the page. How can I Get it so that it does appear on the end of the page? the \hfill command doesn't seem to work. Thank you. Is it possible to instantiate an object at runtime if I only have the DLL name and the class name, without adding a reference to the assembly in the project? The class implements a interface, so once I instantiate the class, I will then cast it to the interface.  Assembly name:     library.dll    Type name:      Company.Project.Classname     EDIT: I dont have the absolute path of the DLL, so Assembly.LoadFile won't work. The DLL might be in the application root, system32, or even loaded in the GAC. What does string theory predict for the singularity inside a black hole? The usual explanation for what's going on inside a black hole goes something like "General Relativity predicts a singularity with infinite curvature, but when matters gets so tightly compressed we should expect quantum effects to become important, so the singularity will probably be blurred". Authors then proceed to say that we need a quantum theory of gravity to answer such things, and quickly abandon the subject.  Well, while we don't have an experimentally confirmed quantum theory of gravity, we do have a speculative one, string theory. What does it say about singularities? Are they smeared out like the books say? Do they remain points (or rings for a rotating black hole) with infinite curvature and density? Do we not know?