1.1
Choose negative addends, e.g. a = -3
and b = -4
.
[math]a + b = -3 + (-4) = -7[/math]
[math]\min(a,b) = \min(-3,-4) = -4[/math]
Since [math]-7 < -4[/math], we have [math]a + b < \min(a,b)[/math].
More generally, [math]a + b < \min(a,b)[/math] is equivalent to
[math]\bigl(a + b < a\bigr) \land \bigl(a + b < b\bigr)[/math],
which simplifies to [math]b < 0[/math] and [math]a < 0[/math]. Hence any pair of negative numbers makes the sum smaller than either addend.
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