The length of a curve
Pythagoras on a short step gives $ds = \sqrt{1 + (y')^2}\,dx$, and the mean value theorem is what turns the rise into a slope.
About 25 minutes7 activities Paper packet
Pythagoras on a short step gives $ds = \sqrt{1 + (y')^2}\,dx$, and the mean value theorem is what turns the rise into a slope.
About 25 minutes7 activities Paper packet