The discussion came from nowhere, ther isn't any - it was a question about things I have forgotten (unfortunatly)...
I do seem to recall from flightschool that the two speeds (vx and vy) were very close together, just a few knots.
So nowadays, if I have to get up there quickly, I usually increase rate of climb, thereby sacrificing speed, at max climb power. I can do this until I reach minclean then I will have to get that nose down.
The question is, as pointed out above, a mathematical jerk off, not of practical value...
But it is fun to think about -
Nic