Let E be a Euclidian vector space, let (i,j) be its standard basis. Note C
the circle centered at the origin with radius a, where a is a real positive number. ⃗⃗
1. Let δ = (a cos as )i+(a sin as )j. Show that ([0, 2πa], δ) is a unit speed parametrization of C
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Expert's answer
2020-05-24T15:08:52-0400
First, the equation of a circle centered at the origin p.O(0;0) and radius R=a>0 has the form
x2+y2=a2
For example, a=3
Secondly, from physics we know the relationship between the velocity vector and the radius vector
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