In Problems $122,$ solve the given differential equation by separation of variables. $1.$ dy dx sin$5$x $2.$ dy dx $($x $1)23.$ dx e$3$x dy $04.$ dy $2($y $21)2$ dx $05.$ x dy dx $4$y $6.$ dy dx $2$xy$207.$ dy dx e$3$x$2$y $8.$ ex y dy dx ey e$2$x$2$y $9.$ y lnx dx dy a y $1$ x b $210.$ dy dx a $2$y $34$x $5$ b