Each of the operation symbols in table
can occur
with limits. They are specified as sub- and superscripts to the
operator, and LATEX will position them appropriately. In an in-text
formula they will appear in more-or-less the usual scripting positions;
but in a displayed formula they will be set below and above the
symbol (which will also be a little larger). The following should
give you an idea of how to use them:
We'll have more to say about the use of \,
in section
.
Let's have a look at each of those expressions when displayed:
ai ,
f ,
f (
x) d
x ,
Xα ,

f (
xi)
Δxi