math theory
posted by jacqueline on .
write a rational and irrational number between 1.12301 and 1.1230101.

rational: 1.12301005
for an irrational, try this:
1.12301^2 = 1.2611514601
1.1230101^2 = 1.261151684702
So, pick any number in between those, which ends in 2,7 or 8 (so it cannot be a perfect square). So, if we choose
(1.2611514601 + 1.261151684702)/2 = 1.261151572401
then its √ will be between the two original numbers. So,
√1.261151572401 = 1.12301004999999888692...
Of course, we could have chosen something easy like
1.12301 + π/10000000000000
or
1.12301 + √2/100000000000000000