Question

Delimiters

Answer 1

\left( \right)


you need to have a pair,
you can make a single one like this \left( right.

Answer 2

to get appropriate sized brackets use left and right
\left( \right)


you need to have a pair,
you can make a single one like this \left( \right.

\[\left\langle\left(\left[\left\{\left(\frac 11\right)\right]\right.\right.\right\rangle\]

Answer 3

\[\left (\text{i see}\right)\]

Answer 4

\[\cdots=\left. \frac{22x}{\gamma}\right|_2^3\]