How can I do this equation?

Question

I'm new using latex, someone can help mw with this equation, please How can I do this equation?

welcome to tex.sx. this question should be helpful: Math symbol question: Vertical bar for ''evaluated at …'' — barbara beeton, Oct 28 '16 at 19:07
Exactly as @barbarabeeton says. The fraction (assuming that's giving you difficulties) is $\frac{\delta T_{i}}{\delta D}$ (obviously the vertical line and the Q should also be within that same pair of $ ... $ ) — Au101, Oct 28 '16 at 19:09
Thanks, the vertical bar was my problem. I didn't know the comand big. This is the code $\frac{\delta T_{i}}{\delta D} \big|_{q}$ — Christian Raine, Oct 28 '16 at 19:22

score 2 · Answer 1 · edited Oct 28 '16 at 19:46

2

Hello welcome to the community. There are a couple ways to do this, I think the easiest and most universal (if you plan on adjusting the sizing or environment of the math display) is the following:

$$
\left. \frac{\delta T_i}{\delta D} \right|_Q
$$

edited Oct 28 '16 at 19:46

Au101

10,278

answered Oct 28 '16 at 19:43

Sean P

21

3

See Why is \[ … \] preferable to $$? – Werner Oct 28 '16 at 19:54

How can I do this equation?

1 Answers1