_ - Tex Command

NAME

_ - used to indicate subscripts; used for pmits on large operators.

{ <#1> _ #2}

^ is used to indicate exponents; used to indicate subscripts; used for pmits on large operators.

Input	Description
#1	argument #1 is optional
#2	use braces in #2, as needed, to clarify what is the exponent.

_2

x_i^2

{x_i}^2

x_{i^2}

x_{i_2}

{x_i}_2

^a_bx^c_d

$ ^a_bx^c_d $

sum_{n=1}^infty

$ sum_{n=1}^infty $

underbrace{x+cdots+x} 
_{n	ext{ times}}

$ underbrace{x+cdots+x} _{n ext{ times}} $