| Title: | Mathematics at DEC |
| Moderator: | RUSURE::EDP |
| Created: | Mon Feb 03 1986 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 2083 |
| Total number of notes: | 14613 |
I saw a reference to the following in net.math, but I didn't see a real
answer to it. Start with the equation
2
X = X + X + X . . . + X
Take the derivative of both sides:
2X = 1 + 1 + 1 . . . + 1
hence
2X = X
Where'd we go wrong ?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 275.1 | SPEEDY::BRETT | Wed May 01 1985 17:38 | 9 | ||
As soon as you took the "derivative" of a non-differentiable function namely F(X) = sum(1..X) X which is only defined on the integers. If you generalize G(X) to be some smooth curve thru the above F(X) you will soon realize the error you made in the differentiation. /Bevin | |||||