Question

lAtEx

Answer 1

\[\Large Not shelfful\\ but shelf{}ful\]

Answer 2

\[\Large Not shelfful\\ \over \small \small \to \to \cool \blue {space?!} but shelfful\]

Answer 3

\[\uppercase{fail}\]

Answer 4

\[
\iiint_0^\infty e^{-x}\,\mathrm{d}x \\
( \big( \Big( \bigg( \Bigg( \\
\begin{matrix}
a & b & c \\
d & e & f \\
g & h & i
\end{matrix}
\]