Determine the set of interior points, accumulation points, isolated points, and bound- ary points for each of the following sets: (a)
{1,(1)/(2),(1)/(3),(1)/(4),(1)/(5),dots}(b)
{0}\cup {1,(1)/(2),(1)/(3),(1)/(4),(1)/(5),dots}(c)
(0,1)\cup (1,2)\cup (2,3)\cup (3,4)\cup cdots\cup (n,n+1)\cup dots(d)
((1)/(2),1)\cup ((1)/(4),(1)/(2))\cup ((1)/(8),(1)/(4))\cup ((1)/(16),(1)/(8))\cup dots(e)
{x:|x-\pi |<1}(f)
{x:x^(2)<2}(g)
(R)/(/)N(h)
(R)/(/)Qhelp
