Installing Ubuntu 20.04 Will the files inside my windows 7 get deleted when I install Ubuntu 20.04 version?
If I chose "Replace Windows with Ubuntu", do I lose the other partition too? I am a newbie in linux. I wanted to install ubuntu to my desktop. I currently have two partitions, Windows 8 in installed on one, and i have some important files in another partition. While installing ubuntu, if I chose "Replace Windows 8 with Ubuntu", do I lose the other partition too?   And are there other ways to leave the other partition as it is, and install ubuntu in the partition  where windows was installed.
Suppress SSL warnings Is there a vendor for animal parts? I'm looking to upgrade all my pouches, but some animals are hard to find, or the part needed drops rarely.  Is there a merchant somewhere that sells them outright? I have shards to spare. Prove that the product of four consecutive positive integers plus one is a perfect square I need to prove the following, but I am not able to do it. This is not homework, nor something related to research, but rather something that came up in preparation for an exam.     If $n = 1 + m$, where $m$ is the product of four consecutive positive   integers, prove that $n$ is a perfect square.   Now since $m = p(p+1)(p+2)(p+3)$;     $p = 0, n = 1$ - Perfect Square      $p = 1, n = 25$ - Perfect Square      $p = 2, n = 121$ - Perfect Square   Is there any way to prove the above without induction? My approach was to expand $m = p(p+1)(p+2)(p+3)$ into a 4th degree equation, and then try proving that $n = m + 1$ is a perfect square, but I wasn't able to do it. Any idea if it is possible? Why is it important to apply transformation to an objects data? I've watched several tutorials and very often they applied the location, rotation or scale to the object when they transformed it in Object Mode. They always said it is important, but why? Ackermann Function primitive recursive How do I use an NBT editor to modify item properties? In Minecraft, the NBT (Named Binary Tag) format is used to store data of our Minecraft worlds, including block, entity, and item properties. In the Java Edition of Minecraft, you can modify this data by including the data in the command, like so: /give @s diamond_sword{Enchantments:[{id:&quot;minecraft:knockback&quot;,lvl:10s}]}  In the Bedrock Edition, on the other hand, NBT is inaccessible from commands. In order to modify NBT, we need to use an external editor. What are some useful item properties that I can modify with an NBT editor, and how can I do so?  Related: What is the opposite of "preaching to the choir"? I just saw Death in Paradise Season 5 Episode 3, which features a photographer using a DSLR to shoot a fashion runway performance.  He had a flash that was a ring around the lens.   I thought that was for macro shots only, where the extreme close-up has trouble with normal flash placement.  For normal photos you want the flash far from the lens, like on a boom on a separate handle framing the camera.  I've seen some recent trendiness in having ring-shaped catch lights, but I supposed those would be positioned in the normal manner: off-angle from the lens.  I suppose if an on-camera had any effect at all it would be for some subtle fill flash.  Is this a realistic thing to see from a pro? Or is it just a cool-looking prop that doesn't really fit the situation? Lille Metro schedule... is it 24/7? The M1 and M2 lines in Lille, France have a confusing . It's 7 days per week, but it looks like it's "running" basically 24h hours per day (minus some ten-minute delay). I never took the metro later than 11 PM when I was in Lille last year, but people told me that it stops just before midnight. But... it looks like it starts right back up again immediately, after about 10 minutes.  What are the actual hours of the Lille M1 and M2 lines? I have a hard time believing that they're 24/7... The problem of counting the solutions $(a_1,a_2,\ldots,a_n)$ with integer $a_i\geq0$ for $i\in\{1,2,\ldots,n\}$ such that $$a_1+a_2+a_3+....a_n=N$$ can be solved with a stars-and-bars argument. What is the solution if one adds the constraint that $a_i\leq r_i$ for certain integers $r_1,\ldots,r_n$?  e.g. for $n=3$, $N=6$ and $(r_1,r_2,r_3)=(3,3,2)$, the tuple $(a_1,a_2,a_3)=(2,3,1)$ is a solution, but $(2,1,3)$ is not a solution because $a_3=3&gt;2=r_3$. How to assign symbols to functions For an existing set of line features, I would like to generate a perpendicular line, of say 1km, at the midpoint of each existing line feature in ArcGIS.  I imagine that The methodology would be to:   create a tangent line at the midpoint of each existing line feature calculate the angle of the tangent line based on the angle of the tangent line, calculate the location of the endpoint of the new line create the new line with the calculated endpoint of the new line and the existing midpoint of the old line   Let's assume that we are in a UTM projection and can use coordinates to calculate distance and direction.  How would I do this with ArcGIS tools or with ArcPy? I can successfully tether my Mac (10.7.3) to my iPhone4 (5.0.1) via wifi, no problem, been doing it for months.  However, when I try to tether via bluetooth instead, I can't seem to see the internet from my mac.  Network Settings reports a green light for Bluetooth PAN, but my browser can't connect to anything at all.  My Mac reports very similar IP addresses for both, starting with 172.20.10 and differing only in the last octet.  Any idea why I can't successfully tether via bluetooth? Proving which QM interpretation is correct Let's assume that the existence of gravitons is theoretically proven or they are detected by LHC could one interpretaion be proven correct? Prove that $\int_0^1t^{p-1}(1-t)^{q-1}\,dt=\frac{\Gamma(p)\Gamma(q)}{\Gamma(p+q)}$ for positive $p$ and $q$ I'm trying to prove that for $p,q&gt;0$, we have $$\int_0^1t^{p-1}(1-t)^{q-1}\,dt=\frac{\Gamma(p)\Gamma(q)}{\Gamma(p+q)}.$$    The hint given suggests that we express $\Gamma(p)\Gamma(q)$ as a double integral, then do a change of variables, but I've been unable thus far to express it as a double integral.  Can anyone get me started or suggest an alternate approach?  Note: This wasn't actually given to me as the $\Gamma$ function, just as a function $f$ satisfying $$f(p)=\int_0^\infty e^{-t}t^{p-1}\,dt$$ for all $p&gt;0$, but I recognized that. This is in the context of an advanced calculus practice exam. Reference for the subgroup structure of $\rm{PSL}_2(q)$ How to merge records for query set We have a question related to a DB query :   CREATE TABLE `Action` (   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,   `emp_Id` int(10) unsigned NOT NULL,   `name` varchar(60) NOT NULL,   `updated_action_at` datetime(3) DEFAULT NULL,   `created_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,   `notes` varchar(400) DEFAULT NULL,   PRIMARY KEY (`id`),    KEY `action_empId_fk` (`emp_Id`),    CONSTRAINT `action_empId_fk` FOREIGN KEY (`emp_Id`) REFERENCES `Employee` (`id`) ON DELETE CASCADE,  ) ENGINE=InnoDB AUTO_INCREMENT=502004 DEFAULT CHARSET=latin1   CREATE TABLE `ActionAssignedTo` (   `action_Id` int(10) unsigned DEFAULT NULL,   `emp_Id` int(10) unsigned DEFAULT NULL,   KEY `actionassignedto_emp_id_foreign` (`emp_Id`),   KEY `actionassignedto_action_id_foreign` (`action_Id`),   CONSTRAINT `ActionAssignedTo_ibfk_1` FOREIGN KEY (`emp_Id`) REFERENCES `Employee` (`id`) ON DELETE CASCADE,   CONSTRAINT `ActionAssignedTo_ibfk_2` FOREIGN KEY (`action_Id`) REFERENCES `Action` (`id`) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=latin1  CREATE TABLE `Employee` (   `id` int(10) unsigned NOT NULL AUTO_INCREMENT,   `vendor_Id` int(10) unsigned DEFAULT NULL,   `name` varchar(40) NOT NULL,   `mobile_Number` varchar(15) NOT NULL,   `active` tinyint(1) DEFAULT '1',   `updated_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,   `created_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,   PRIMARY KEY (`id`),   KEY `employee_vendor_id_foreign` (`vendor_Id`),   CONSTRAINT `employee_vendor_id_foreign` FOREIGN KEY (`vendor_Id`) REFERENCES `Vendor` (`vendor_Id`) ) ENGINE=InnoDB AUTO_INCREMENT=511 DEFAULT CHARSET=latin1   We want to find the action created by employee with Action.empId = 4 along with the list of Assignee (an action can be assigned to multiple people)  We have the following query :   Select     notes,             Action.id,             AssigneeName.name,             ActionAssignedTo.emp_Id  from       Employee inner join Action  on         (Action.emp_Id = Employee.id  and        Action.emp_Id in (select Employee.id                               from Employee                               where Employee.vendor_Id = 1)) inner      join ActionAssignedTo  on         Action.id =  ActionAssignedTo.action_Id inner join Employee as AssigneeName  on         ActionAssignedTo.emp_Id =  AssigneeName.id where      Action.emp_Id = 4   Now, lets say if Action with id = 10 was assigned to 2 people : John (empId : 2) And Jack (empId : 5) --> the above query returns following results :  (columns from the query)  notes                       | Action.id | AssigneeName.name | ActionAssignedTo.emp_Id 1. Finish Designing Queries | 10        | John              | 2 2. Finish Designing Queries | 10        | Jack              | 5   If we observe the above results the first 2 columns get repeated for the Assignees for SAME ACTION ID  --> is there a way we can merge them something like   1. Finish Designing Queries |10         | { John : 2  , Jack  : 5}   Basically records being merged into one. Why this proof $0=1$ is wrong?(breakfast joke) We have $$e^{2\pi i n}=1$$  So we have $$e^{2\pi in+1}=e$$  which implies $$(e^{2\pi in+1})^{2\pi in+1}=e^{2\pi in+1}=e$$ Thus we have $$e^{-4\pi^{2}n^{2}+4\pi in+1}=e$$  This implies $$e^{-4\pi^{2}n^{2}}=1$$  Taking the limit when $n\rightarrow \infty$ gives $0=1$. How do you programmatically set an attribute? Suppose I have a python object x and a string s, how do I set the attribute s on x? So:  &gt;&gt;&gt; x = SomeObject() &gt;&gt;&gt; attr = 'myAttr' &gt;&gt;&gt; # magic goes here &gt;&gt;&gt; x.myAttr 'magic'   What's the magic? The goal of this, incidentally, is to cache calls to x.__getattr__(). I can do an eval("something()"); to execute the code dynamically in JavaScript. Is there a way for me to do the same thing in C#?  An example of what I am trying to do is: I have an integer variable (say i) and I have multiple properties by the names: "Property1", "Property2", "Property3", etc. Now, I want to perform some operations on the " Propertyi " property depending on the value of i.   This is really simple with Javascript. Is there any way to do this with C#?