Chapter 2: Space Curves
Section 2.7: Frenet-Serret Formalism
If s is arc length and the prime denotes dds, prove that T′·B′= −κ τ.
The first two equations on the right in Table 2.7.1 lead to the following calculation.
T′·B′=κ N·−τ N= −κ τ N·N= −κ τ ⋅1= −κ τ
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