if 1/x>0 then
x should be >0 (because reciprocal of a positive number is always positve)
now if 1/x<2 then
x>1/2
see
1/x<2
(1/x)-2<0
(1-2x)/x<0
since x can't be 0 multiplying both side by x
1-2x<0
2x>1
x>1/2
if 1/x>0 then
x should be >0 (because reciprocal of a positive number is always positve)
now if 1/x<2 then
x>1/2
see
1/x<2
(1/x)-2<0
(1-2x)/x<0
since x can't be 0 multiplying both side by x
1-2x<0
2x>1
x>1/2