Magnitude of the Derivative of the Unit Tangent Vector
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16
Unit Normal Vector
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20
Expression 25: "k" left parenthesis, "t" , right parenthesis equals StartFraction, "m" Subscript, 1 , Baseline left parenthesis, "t" , right parenthesis Over "m" left parenthesis, "t" , right parenthesis , EndFractionkt=m1tmt