Asked by EKA
Pick 2 consecutive, positive integers and call them a and b. Prove that a/2 + b/2 >/= 1.
what does it mean by consecutive and positive integers? and how you can prove it?
Thank You..
what does it mean by consecutive and positive integers? and how you can prove it?
Thank You..
Answers
Answered by
Steve
consecutive integers differ by 1. Pick any two adjacent elements of the list below:
1,2,3,4,5,6,7,8,9,...
For example, 6 and 7. Those are consecutive integers.
SO, you have two numbers,
a=n and b=n+1
n/2 + (n+1)/2 = (n + n+1)/2 = (2n+1)/2 = n + 1/2
Since n is positive, n >= 1, so
n + 1/2 >= 1 + 1/2 >= 1
1,2,3,4,5,6,7,8,9,...
For example, 6 and 7. Those are consecutive integers.
SO, you have two numbers,
a=n and b=n+1
n/2 + (n+1)/2 = (n + n+1)/2 = (2n+1)/2 = n + 1/2
Since n is positive, n >= 1, so
n + 1/2 >= 1 + 1/2 >= 1
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