In a recent answer I typeset the following expression:
$$\cos x\left.\right|_{-\pi/4}^0$$
(I used \cos x\left.\right|_{-\pi/4}^0
)
I thought it looked funny on the page, but I wasn't sure it would look funny to anyone else, and I couldn't articulate to myself what about it looked bad. I think it has something to do with the way the lower limit sticks out. But I'm sure that using \frac\pi4
there instead would be much worse.
Clarification: I don't think MathJax is the culprit here; I think it did just what I asked for. My question is whether I asked for the right thing, in the same sense that $\cos x\left.\right|_{-\pi/4}^0$ is closer to the right thing than $\cos x\left.\right|_{-\frac\pi4}^0$ is.
Does anyone have any thoughts about this?