02-07-2011 04:34 PM
It is actually a divide by -2. But I'm also curious about that also. To it is Epsilon to - 1/2 epsilon. I would expect Epsilon to negative epsilon.
02-07-2011 04:35 PM - edited 02-07-2011 04:41 PM
@RandyR wrote:
Darin, Why the *(-2) instead of a negate for the lower limit epsilon? Thanks, Randy
The -2 is inverted, so it is -epsilon/2. epsilon is well known as the smallest value such that 1+epsilon!=1. For subtraction, the value of "negative" epsilon is one half the value. So 1+epsilon!=1, , but 1-epsilon/2!=1.
You can use epsilon, you just give up one digit in the negative direction. Most times, who cares, the primary reason was for an astute reader to notice and ask. thanks.
Edit: Revised definition to match LV help.