Im not sure why the numbers turned into $?$ question marks but ill resend the numbers again $($a$)$limx$0-$f$($x$)=$ help $($limits$)$

$($b$)$limx$0+$f$($x$)=$

$($c$)$limx$0$ f$($x$)=$

$($d$)$limx$-2$ f$($x$)=$

$($e$)$f$(0)=$