Wow, everyone seems to be an expert in error analysis----jus' compute[numerically, graphically, or functionally]--the second derivative of the relevant function---in order to find the ZERO SLOPE tangent to the curve and find the min and max tolerance values of your funtions---if you have an equation handy take the second derivative and set that equal to zero---do that for many hundreds of functions and report that data as---xxx0 units +/-.0023units--then submit that analysis to Boeing or Airbus--so that Mad Flight Scientist can then build a flight test schedule with their test pilots--once airworthiness certification of the ship and the AFM is done place---submit that data to performance experts like, Mutt, John Tullamarine, or Old Smokey--where they can then use the data to meet the air carrier requirements--so that the plane can be used to make money---You might require some rest afterward
--but then YOU can do whatever the HELL you like at V1---until then
Get it, Got it, Good,
Those Slick Engineers!!!
PA