How Do You Format Fractions in LaTeX?

[NotMrX]

Hello,

How do you all make your numbers look so nice with a horizonatal line between the fraction? I tried inserting some from copy and paste and it lost all the subscripts. Is there a way to do this on a computer without saving capabilities?

 

[3trQN]

https://www.physicsforums.com/misc/howtolatex.pdf

 

[Saketh]

If you want to format a fraction, type in [ tex ]\frac{1}{2}[ /tex ], without the spaces, of course.

This ends up looking like $$\frac{1}{2}$$.

 

[NotMrX]

I was looking at the tutorial and it seemed that sometimes next to the tex it used forward slash and sometimes it used back slash. Does it make a difference?

I am just trying some stuff here:
$$\frac{1}{2}$$
$$\int$$
$$\intX^2dx$$
$$\lambda$$

 

[NotMrX]

I wrote the following without the space
[ tex]\int\int\frac{G\lambdaY}{\sqrt[3]{Y^2+(x-r)^2}}dx\lamda\dr[/tex]

this was the command I typed in trying to get if I is the integral sign
I I [G*(m/L)*Y/(Y^2+(x-r)^2)^(3/2)*dx*m/L*dr

I guess that is a long math sentence to start with but I don't see the error but the commands (backward slashes \) within themselves seem to mess up. I don't if it is possible to change the tutorial but it use both the forward and backward slash in [ /tex] and there seems to be an extra slash in the fraction command.

Here is what was produced from my latex entry:
$$\int\int\frac{G\lambdaY}{\sqrt[3]{Y^2+(x-r)^2}}dx\lamda\dr$$