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# P5 Intrinsic Coordinates watch

1. Just looked through some intrinsic questions and have got confused. They all say that the arc length (s) is measured from a point such as 0,1. What is the point in this information?

When I find s I just use limits x and 0 all the time? Is that because its measured from the 0,1?

What about if s was measured from 1,1? Also is the y coordiante just for show? Any use for it?
2. (Original post by Womble548)
Just looked through some intrinsic questions and have got confused. They all say that the arc length (s) is measured from a point such as 0,1. What is the point in this information?

When I find s I just use limits x and 0 all the time? Is that because its measured from the 0,1?

What about if s was measured from 1,1? Also is the y coordiante just for show? Any use for it?
s is arc length along the curve so you have to start measuring from somewhere.

If it's measured from (a,f(a)) on the curve y=f(x) then you just calculate s as

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