Troubleshooting Latex Previewer: Copying and Pasting Code from Forums and PDFs

[Schrodinger's Dog]

The Latex previewer on the Latex thread? It doesn't appear to work properly, I'll admit that I don't know much at all about latex but even when I cut and paste text from say the pdf or the forum directly into the box it comes up with a load of compuspeak and no image? Is there a reason for this so far I've tried [tex]x^2\sqrt{x}[\tex] and I get no joy, and a few even simpler equations but nothing but error script?

Btw I cut and pasted that from the pdf tutorial to make sure I had the format right? Am I beind stupid, is my formatting wrong, or can you not copy and paste latex code from the forum to the test program?

Ahhh, I tried adding $ signs instead of using the [tex][\tex] tags and it appeared to work; any reason why the tex tags don't work? As in the instructions it says to place tex tags before maths?

I've just noticed the math mode as well, maybe I should have played around first. I guess everyone just knows that you don't need to use the format [tex] tags unless your a chump but anyway live and learn...

 

[RandallB]

I'm no pro at it but when you write:
$$x^2\sqrt{x}$$
Doesn't the slash need to be forward ( / ) not backwards ( \ )as yours seem to be in the closing tag?
While I'm at it does anyone know the Latex to make a "NOT =" sign?

 

[robphy]

While I'm at it does anyone know the Latex to make a "NOT =" sign?

$$\neq$$ \neq

 

[RandallB]

Thanks,
test on variations of not ; $$\neq$$ \neq

$$\geq$$ \geq
$$\ngeq$$ \geq

$$\leq$$ \leq
$$\nleq$$ \nleq

$$\simeq$$ \simeq
... \nsimeq ... is not valid

 

[robphy]

Thanks,
test on variations of not ; $$\neq$$ \neq

$$\geq$$ \geq
$$\ngeq$$ \geq

$$\leq$$ \leq
$$\nleq$$ \nleq

$$\simeq$$ \simeq
... \nsimeq ... is not valid

$$\not\eq$$ \not\eq

$$\not\geq$$ \not\geq

$$\not\leq$$ \not\leq

$$\not\simeq$$ \not\simeq

$$\not 5$$ \not 5

 

[Schrodinger's Dog]

I'm no pro at it but when you write:
$$x^2\sqrt{x}$$
Doesn't the slash need to be forward ( / ) not backwards ( \ )as yours seem to be in the closing tag?
While I'm at it does anyone know the Latex to make a "NOT =" sign?

It doesn't like tex tags forward slashed or backwards although point noted.(in the tutorial it's actually that way which is where I copied it from)

It also doesn't use \frac instead it uses the format 1 \over 2.

 

[Gokul43201]

SD, are you talking about the preview mode or posting in general?

LaTeX is not enabled in preview mode...unless you're using the previewer linked here: https://www.physicsforums.com/showthread.php?t=144652 , but there's problems with that tester.

 

[Schrodinger's Dog]

SD, are you talking about the preview mode or posting in general?

LaTeX is not enabled in preview mode...unless you're using the previewer linked here: https://www.physicsforums.com/showthread.php?t=144652 , but there's problems with that tester.

Yeah that's the one, I didn't realize it had been highlighted already, the idea was to let people know there are a few issues with that previewer so job done. Thanks people for the advice.