The expression for arc length in polar form is_________________
Posted: Thu Jul 14, 2022 9:29 am
a) \(ds = \int_a^b \sqrt{r^2 + (\frac{dr}{dθ})^2} \)
b) \(ds = \int_a^b \sqrt{r^2 + (\frac{dr}{dθ})^2} \,dθ \)
c) \(ds = \int_a^b \sqrt{(\frac{dr}{dθ})^2} \,dθ \)
d) \(ds = \int_a^b \sqrt{r^2 + (\frac{dr}{dθ})^2} \,dr \)
b) \(ds = \int_a^b \sqrt{r^2 + (\frac{dr}{dθ})^2} \,dθ \)
c) \(ds = \int_a^b \sqrt{(\frac{dr}{dθ})^2} \,dθ \)
d) \(ds = \int_a^b \sqrt{r^2 + (\frac{dr}{dθ})^2} \,dr \)