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Past exam of the mathematics course of the University of Cambridge
/
2010
/
ii
/
Paper 2
/
25H
/
ii
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Mathematics course of the University of Cambridge
Past exam of the mathematics course of the University of Cambridge
2010
ii
Paper 2
25H
Created
2026-09-24
Updated
2026-09-24
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Solution
ii
Solution
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ii
The
Fenchel theorem
states that every closed
regular space
curve
has
total curvature
at least
2
π
:
∫
κ
(
s
)
d
s
≥
2
π
.
(1)
Equality holds precisely for
a
convex
plane curve
, traversed once.
Ancestors
(10)
25H
Paper 2
ii
2010
Past exam of the mathematics course of the University of Cambridge
Mathematics course of the University of Cambridge
Course of the University of Cambridge
University of Cambridge
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