If I evaluate
Reduce[#, x] & /@ {{4 x > 1, 2 x < 5}, {5 x > 1, x < 5}, {4 x > 1, x < 5}}
the result is
{1/4 < x < 5/2, 1/5 < x < 5, 1/4 < x < 5}
If I select the result and copy-paste it on a new line (that is, I am not typing by hand the inequalities) to compare it with SameQ
(Reduce[#, x] & /@ {{4 x > 1, 2 x < 5}, {5 x > 1, x < 5}, {4 x > 1,
x < 5}}) === {1/4 < x < 5/2, 1/5 < x < 5, 1/4 < x < 5}
I get False
Why is that so?
In particular, I found that out when using Length
on the expressions
{Length /@ (Reduce[#, x] & /@ {{4 x > 1, 2 x < 5}, {5 x > 1,
x < 5}, {4 x > 1, x < 5}}),
Length /@ {1/4 < x < 5/2, 1/5 < x < 5, 1/4 < x < 5}}
which, surprisingly to me, leads to different results
{{5, 5, 5}, {3, 3, 3}}