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chirag | (203.88.131.2) | Thursday, 13 September 2001 2:20:52 PM
serch of mathes history period of 1850 to 1950
nadeem | (202.179.141.5) | Tuesday, 29 October 2002 9:12:19 AM
hello i invent a new differential equation string theory
DennisC | (32.101.126.142) | Sunday, 24 November 2002 7:19:29 AM
A question about good (if informal) notation for double limits.
Suppose f is a physical function and x and y are physical parameters. We want the limit of f(x,y) as x-->0 and y-->0. We do not mean this as a sequence of limits. We are only requiring that (x,y)-->(0,0), by any route.
Is the best way to write this: lim [over] x,y-->0?
Thanks
DazedConfused | (200.13.164.130) | Friday, 13 June 2003 6:32:11 AM
hello....o.k...i need some serious help....i have a system that for
any given instant in time follows:
x + y = z
but: (1) y is always increasing while x is decreasing (as time changes)
also, (2) z changes with respect to time
and (3) the complicated thing (for me) is that the rate of change in y (say an increase) and rate of change in x (the corresponding decrease) is "faster"/increased for larger changes in z per across any time interval....
ummmmm...would it be asking too much for someone to put this in dx/dt, dy/dt, dy/dx, dx/dy, dz/dt format....or whatever best decribes the situation????
thanks redowl1313athotmaildotcom