April 29th, 2018, 06:28 AM  #11 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,951 Thanks: 987 
As example (I changed the dollar signs to S): S \dfrac 3 2 \dfrac d v  \dfrac d v = \dfrac 5 2 S what I "see" is: "undefined control sequence \ dfrac" ...all in shining yellow colored background!! Refreshing page and/or swearing like a sailor don't help 
April 29th, 2018, 06:41 AM  #12 
Senior Member Joined: Jun 2015 From: England Posts: 891 Thanks: 269 
$\displaystyle \frac{{dy}}{{dx}} = \frac{{\Delta y}}{{\Delta x}} = \frac{{\delta y}}{{\delta x}} \ne \frac{{{\partial ^2}\Omega }}{{\partial {u^2}}}$ Try swearing properly, like a Marine. What do you see of this? 
April 29th, 2018, 06:46 AM  #13 
Senior Member Joined: Jun 2015 From: England Posts: 891 Thanks: 269 
Before refreshing it looks like this, indefinitely. After refreshing, then waiting 48 seconds, the forum software deigns to "load Mathjax" and it looks like the second pic. Last edited by skipjack; April 29th, 2018 at 04:15 PM. 
April 29th, 2018, 08:56 AM  #14 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,951 Thanks: 987  
April 29th, 2018, 12:25 PM  #15 
Senior Member Joined: Jun 2015 From: England Posts: 891 Thanks: 269 
Perhaps you are not entering the correct code for this forum's implementation? This is the actual code I entered. I have removed the initial and final square bracket to prevent it rendering. math]\frac{{dy}}{{dx}} = \frac{{\Delta y}}{{\Delta x}} = \frac{{\delta y}}{{\delta x}} \ne \frac{{{\partial ^2}\Omega }}{{\partial {u^2}}}[/math Note how the forum software has changed the mathml indicators to something else in the screenshot. 
April 29th, 2018, 12:42 PM  #16 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,951 Thanks: 987 
Yer missing my point: I don't use latex: this happens when I look at posts where latex has been used... I first see 'em in latex format (with the \$); a few seconds later, after the "formatting", instead of seeing the equation in all its f'n glory, I see that "yellow" phenomenon I described....got it?? Btw, if I replace your [math] with \$, it still works the same... Last edited by skipjack; April 29th, 2018 at 04:13 PM. 
April 29th, 2018, 12:44 PM  #17 
Senior Member Joined: Sep 2016 From: USA Posts: 556 Thanks: 321 Math Focus: Dynamical systems, analytic function theory, numerics 
My 2 cents: 1. The biggest critique is to get rid of the "typing" of each character. This was absolutely dreadful and despite the video being less than 2 minutes, I almost closed it anyway. You should just display the full text, or if you like, uncover it accompanied by a voiceover. 2. If the ideal audience for this video is lower level math, then you might want to include a scalar example where speed and velocity differ. For example, a person's speed when driving to and from a place is positive, whereas for velocity one of these should be negative. 
April 29th, 2018, 01:21 PM  #18  
Senior Member Joined: Oct 2009 Posts: 733 Thanks: 246  Quote:
 
April 29th, 2018, 01:45 PM  #19  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,040 Thanks: 814 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
[math]3 \times 6[/math] $\displaystyle 3 \times 6$ Second, why are you using {{ }} ? [math]\frac{dy}{dx}[/math] gives $\displaystyle \frac{dy}{dx}$. Dan  
April 29th, 2018, 02:14 PM  #20  
Senior Member Joined: Jun 2015 From: England Posts: 891 Thanks: 269  Quote:
Last edited by skipjack; April 30th, 2018 at 07:39 AM.  

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