2.2
Unit tangent
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∫
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Calculus III
Unit 1 · Multivariable and Vector Calculus Toolbox
1.1
Vectors in 2D
1.2
Vectors in 3D
1.3
Dot Product
1.4
Cross Product
1.5
Lines
1.6
Planes
1.7
Quadric Surfaces
1.8
Cylindrical & Spherical
Unit 2 · Vector Valued Functions
2.1
Space Curves
2.2
Vector Calculus
2.2
Derivative definition
2.2
Unit tangent
2.2
Constant length
2.2
Vector integral
2.3
Arc Length
2.4
TNB Vectors
2.5
Curvature
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Calculus III
Section 2.2
2.2 r′(t) is tangent to the curve; T(t) keeps only its direction
2.2
r′(t) is tangent to the curve; T(t) keeps only its direction
Curve
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The derivative is the limit of the difference quotient
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Constant length forces r ⊥ r′