[Case]

There are acctually slight errors that can be found in all of those. Try this one, in calculus, you'll deal with "conditionally convergent series". which, if summed to infinity, can equal any number.


(Infinity)
(Sigma) (-1)^n * (1/n)
n=1

or in other words, plug 1 in for N, plug 2 in for N and add it, plus 3 in..... to infinity. And the number you get? Whatever you want, it can be 5, it can be 0, it can be 450005.4343. Crazy, huh?