User:Raul654/proof

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Proof that 0 = -1

I stumbled across this in my high school Calculus BC class. Here's a challenge for my fellow math geeks - what is wrong here?


Given:

Let

Therefore,

Let

Therefore,

Substitute from above.

Sec(x) * cos(x) = 1

Group the minus signs.

(Subtract the integral from each side)

Voilà - a logical inconsistency.