Engineering Board Exam Reviewer · Polar Coordinates · medium

Identify the conic r=3/1+ .

1. Parabola
2. Ellipse
3. Hyperbola
4. Circle

Answer

A. Parabola

Solution

In the form r=ed/1+e , the coefficient of in the denominator is e=1, so the conic is a parabola.

More Polar Coordinates questions

1. Find the distance between the polar points (3,30°) and (5,90°).
2. Convert the polar equation r=4 to rectangular form.
3. Convert the rectangular point (-3,3) to polar coordinates (r, ) with r>0 and 0°≤ <360°.
4. Convert the polar point (4,60°) to rectangular coordinates.
5. Find the point of intersection, with 0°< <90°, of the curves r=2 and r=4 .
6. Express the line x=4 in polar form.
7. Find the eccentricity of the conic r=6/2+ .

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