# Arc Length of a Curve ( Smooth Curve ) 5 Examples

I derive the formula for finding the Arc Length of a Smooth Curve and then work through 5 examples from easy to more difficult.
EXAMPLES at 15:39 21:03 28:22 33:35 38:21
At 43:22 you don’t need u’ when using du.
Also an added note from a viewer: Although it doesn’t change the basic idea ! At 7:36 you have the sum starting with i = 1, but there is no isub0. You need either i = 2 or use xsub(i+1) – xsubi etc.

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