- #1

Bipolarity

- 775

- 2

It turns out that the correct formula is actually

[itex]\int^{β}_{α}\sqrt{r^{2}+(\frac{dr}{dθ})^{2}} \ dθ [/itex]

I know how the correct formula is derived, I just can't figure out why the reasoning for the first formula is incorrect.

BiP