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AP Calculus AB/BC
Unit 9 – Parametric Equations, Polar Coordinates, and Vector–Valued Functions (BC Only)
Topic 9.2
A particle moves on the xy-plane. Its motion can be described by the parametric functions y(t) = sin(t) and x(t) = cos(t). For which t in the interval 0 ≤ t < 2π is the path of the particle concave down?
π/2 < t < 3π/2
0 < t < π
π < t < 2π
t < π/2 or t > 3π/2
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AP Calculus AB/BC - 9.2 Second Derivatives of Parametric Equations
Key terms
Concave Down
Parametric Functions
xy-plane
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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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