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# hw9 - Homework Assignment 9 9.6-9.8 1 Eliminate the...

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Homework Assignment 9: 9.6-9.8 1. Eliminate the parameter and find a corresponding rectangular equation: x = 3t 2 and y = 2t + 1 a) 2x 2 + 3y 2 – 1 = 0 b) 2x – 3y +3 = 0 c) 3y 2 – 4x + 1 = 0 d) 3y 2 – 4x – 6y + 3 = 0 e) none of these 2. Eliminate the parameter and find a corresponding rectangular equation: x = 2cos θ and y =cos 2 θ a) x + y = cos θ (2 + cos θ ) b) x – 2y = 0 c) y = (1 – x/2) 2 d) x 2 = 4y e) none of these 3. Find the arc length: x = t 2 , y = 2t 2 + 1, 1<t<3 4. Eliminate the parameter and find a corresponding rectangular equation for x = 2 cos θ and y = cos 2 θ a) x + y = cos θ (2 + cos θ ) b) x – 2y = 0 c) y = (1 – x/2) 2 d) x 2 = 4y e) none of these 5. Find the arc length: x= t 2 , y = 2t 2 – 1, 1 < t < 4 6. Find dy dx if x = t 2 and y = 1 t - t t -

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hw9 - Homework Assignment 9 9.6-9.8 1 Eliminate the...

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