The problem is in the third step
Good afternoon once again,
I hope it is acceptable keep posting these. It seems like I make some small mistake on each and every one of them, so the feedback is rather helpful.
Find the arc length of the logarithmic spiral for .
I have the following:
r=ae^{b\theta}
\frac{r}{dr}=abe^{b\theta}
So...
How did I do this time around?