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(Solved): Determine the concavity of the curve represented by the parametric equations \( x(t)=-4 \sin (2 t) ...
Determine the concavity of the curve represented by the parametric equations \( x(t)=-4 \sin (2 t) \) and \( y(t)=-8 \cos (2 t) \) when \( t=0 \). Select the correct answer below: Concave up Concave down Inflection point