OPERATORS Apply the given operator to the given functions. Show all steps in detail. $1.$ D$2+2$D;cosh$2$x$,$ex$+$e$2$x$,$cosx $2.$ D$3$I;$3$x$2+3$x$,3$e$3$x$,$cos$4$xsin$4$x $3.($D$2$I$)2$;e$2$x$,$xe$2$x$,$e$2$x $4.($D$+6$I$)2$;$6$x$+$sin$6$x$,$xe$6$x $5.($D$2$I$)($D$+3$I$)$;e$2$x$,$xe$2$x$,$e$3$x

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