Posted by **Evan** on Tuesday, April 10, 2007 at 9:08pm.

The rate of performance is given by dN/dt=1/(2sqroot(t+1)) where N is the number of unity completed t hours after beginning a new tak.

If 2 units are completed afer 3 hours, how many units are completed after 8 hours?

see your other post under another name above.