- #1
Izzhov
- 121
- 0
[tex] x^2=x+x+ ... +x [/tex] (with x terms). Its derivative is [tex] 1+1+ ... +1 [/tex] (also x terms). By this logic, [tex] \frac{d}{dx} x^2=x [/tex] But it doesn't. So what's wrong with this picture?