I have seen the following syntax in a LaTeX example :  \( Inline math formula \)   What is the difference between those delimiters and $ ?
Along the lines of , what reasons are there (if any) to favor \( ... \) over $ ... $?
How to see the error messages when I get the white screen of death? If $\alpha$ is a real root of the equation   $$x^5-x^3+x-2=0$$   find the value of $\lfloor {\alpha}^6 \rfloor$.      This one totally stumped me. We are asked to calculate $\lfloor {\alpha}^6 \rfloor$ without actually calculating the root or using wolfram alpha or any other calculator. I found that the above equation has only one real root by sketching its graph using calculus. I was also able to use the intermediate value theorem to conclude that $1&lt;\alpha&lt;2$ , but this is of little use while calculating $\lfloor {\alpha}^6 \rfloor$. Please help! Combining two covariance matrices Font characters displayed as squares in Ubuntu 18.04 How to bond/connect wires to neodymium magnets? After reading , I learned it is not advisable to solder a wire to neodymium magnets.  After more reading I found  post describing the use of conductive epoxy to bond electrical wires to neodymium magnets, a very messy process which takes several hours of waiting.  I want to ask this community if they have or suggest better methods to bond/connect a wire to a neodymium magnet to act as a conductive connection? Raspberry Pi Jessie Wi-Fi doesn't work with multiple IPs on same network I would like to use two different static IP addresses for the same network with the same Wi-Fi dongle. I read in different forums that it's better to use /etc/network/interfaces instead of dhcpcd.conf for that purpose. So I changed the /etc/network/interfaces that way:  auto lo iface lo inet loopback  iface eth0 inet dhcp auto wlan0 allow-hotplug wlan0 iface wlan0 inet static     address 192.168.0.60     netmask 255.255.255.0     gateway 192.168.0.10     wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf auto wlan0:0 allow-hotplug wlan0:0 iface wlan0:0 inet static     address 192.168.0.61     netmask 255.255.255.0     wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf   The issue now is that for the most of the time I can't ping any member of the network. During the first 10 seconds, everything works fine and then I mostly don't get any connection.  ifconfig shows the following:  lo        Link encap:Lokale Schleife             inet Adresse:127.0.0.1  Maske:255.0.0.0           inet6-Adresse: ::1/128 Gültigkeitsbereich:Maschine           UP LOOPBACK RUNNING  MTU:65536  Metrik:1           RX packets:1237 errors:0 dropped:0 overruns:0 frame:0           TX packets:1237 errors:0 dropped:0 overruns:0 carrier:0           Kollisionen:0 Sendewarteschlangenlänge:1            RX bytes:100748 (98.3 KiB)  TX bytes:100748 (98.3 KiB)  wlan0     Link encap:Ethernet  Hardware Adresse b8:27:eb:a2:4b:72             inet Adresse:192.168.0.60  Bcast:192.168.0.255  Maske:255.255.255.0           inet6-Adresse: fe80::ba27:ebff:fea2:4b72/64 Gültigkeitsbereich:Verbindung           UP BROADCAST MULTICAST  MTU:1500  Metrik:1           RX packets:15498 errors:0 dropped:10634 overruns:0 frame:0           TX packets:5446 errors:0 dropped:0 overruns:0 carrier:0           Kollisionen:0 Sendewarteschlangenlänge:1000            RX bytes:5910381 (5.6 MiB)  TX bytes:722284 (705.3 KiB)  wlan0:0   Link encap:Ethernet  Hardware Adresse b8:27:eb:a2:4b:72             inet Adresse:192.168.0.61  Bcast:192.168.0.255  Maske:255.255.255.0           UP BROADCAST MULTICAST  MTU:1500  Metrik:1   and route -ne has the following output:    Ziel            Router          Genmask         Flags   MSS Fenster irtt Iface 0.0.0.0         192.168.0.10    0.0.0.0         UG        0 0          0 wlan0 192.168.0.0     0.0.0.0         255.255.255.0   U         0 0          0 wlan0   I also stoped dhcpcd, the IPs aren't in the dhcp IP pool of the router and with one static IP everything works fine  Does anyone have any clue what I did wrong? Let $R$ be commutative ring with no (nonzero) nilpotents. If $f(x) = a_0+a_1x+\cdots+a_nx^n$ is a zero divisor in $R[x]$, how do I show there's an element $b \ne 0$ in $R$ such that $ba_0=ba_1=\cdots=ba_n=0$? how do I change the registered name in Windows 7 to my own name? How do I remove/delete a folder that is not empty? Let $A$ be a diagonalizable matrix and $\lambda$ be an eigenvalue of A. Prove that rank($\lambda I - A$) = rank(($\lambda I - A)^2$). Options for object creation are greyed out I am trying to model a tree. I turned on the Add a sapling add-on in user preferences, however once I want to begin editing the settings, they come up but is grey and doesn't let me click on it.    I have also attached my blend file here: Crash adding comment The SE iOS app crashes when adding comments to certain posts.  It was discovered to be if the "Add an Answer" button was visible, not just responding to a deleted comment.  Edited to match answer. Previous steps were not the only use case, and this error keeps getting re-reported in different ways. I am starting to see a lot of people claiming that convential current is 'wrong' because Franklin made an error when he first started investigating electrostatics, and that later scientists didn't bother correcting the mistake, but preferred to keep the 'convention' (here is a classic example: )  I always thought he didn't get it wrong. He said that current is positive in the direction that positive charge flows, and vice-versa. He of course had no way to know which side of two sticks behind rubbed actually gained or lost mass. So he wasn't wrong. What were you taught?  P.S. I can't help but feel we are lucky that he got it 'backwards', because clearly many people are confused about electrostastics (including the author of that text book!) and believe electricity has to involve electrons (an unfortunate name... why couldn't they have been named negatrons...) What's the meaning "them" here? I've confused about the word "them" in the middle of the sentence:     They know all about them   Westovers in Idaho.   Could you please tell me what the meaning of "them" here is?     Does it mean "they know about the oils which are made by Westovers in Idaho"?   The full text is here:      Dad had always said he wanted to build a room the size of a cruise ship   but I’d never thought he’d have the money. I looked to Mother for an   explanation but it was Dad who answered. The business was a roaring   success, he explained. Essential oils were popular, and Mother had the best   on the market. “Our oils are so good,” he said, “we’ve started eating into the   profits of the large corporate producers. They know all about them   Westovers in Idaho.”   Educated by Tara Westover Weighing a flying bird What is glue stretching? I had a question about dynamic vspaces () and there was a hint I should use a stretchable glue. Searching with Google didn't give me a helpful answer.  I would be glad, if someone can explain it and give me a simple example to understand how it works. How to rename wp-includes folder? Is there a way that we could rename wp-includes folder   I have found out there are ways to do for other folders. But how do we do it for wp-includes folder? How to remove/apply all modifiers of one object in python Lets assume you have 1 object with 4 modifiers added to it. I am curious how one would approach the task to apply all or to delete all modifiers of a just selected object that has many modifiers already added.  The console reads out the modifier delete as  bpy.ops.object.modifier_remove(modifier="Box Right ")   So "Box Right " I might have to replace with something like active.object.modifier.name and then work each modifier off?  This would be very helpful when you want to generate a static mesh for animation or 3D printing. Can the Force be used to fly? In The Empire Strikes Back Yoda uses the Force to lift Luke's X-Wing out of the water and put it on land.  In Attack of the Clones and in many instances in the second series of The Clone Wars, Anakin (and others) use the Force to jump higher than they could otherwise, or to jump from very high locations, but I don't think I've ever seen the Force used for outright self-levitation.  But if Yoda could lift the X-Wing, shouldn't a strong Jedi be able to lift himself and, essentially, fly with the help of the Force? Enable HTML5 tags on Eclipse I really love Eclipse (PDT)... But i'm developing sites using HTML5 and CSS3 and it mark the HTML5 tags like &lt;nav&gt;, &lt;section&gt; and &lt;article&gt;  as invalid tags (inexistent).  How can I add those new tags to it?  And what about CSS3 rules?  I read something about remove the "invalid tag" check... and that's not what I want. :(