Answer to Question #3410 in Real Analysis for junel

Question #3410
Show that if& a < b, then a< (1/2)(a+b) < b&
1
Expert's answer
2011-07-07T05:51:32-0400
a < b
Let's add a to both sides of inequality
a +a < b + a
2a < b + a
Thus
a < (b+ a) /2

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