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5. (4 marks) Sketch the following parametric curves in R2: (a) (2 marks) r(t) = (t cos(t), tsin(t)), te [0, 27]. (b) (2 marks) r(t)

5. (4 marks) Sketch the following parametric curves in R2: (a) (2 marks) r(t) = (t cos(t), tsin(t)), te [0, 27]. (b) (2 marks) r(t) = (cos(2t) cos(t), cos(2t) sin(t) ), te [0, 27]

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