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1. |
What is the differential equation of a family of parabolas with the foci at the origin and axis along the X-axis? |
A. | 2xy + 4y(y )<sup>2</sup>-y=0 |
B. | xy + y(y )<sup>2</sup>-y=0 |
C. | 2xy + y(y )<sup>2</sup>-y=0 |
D. | 2xy +2y(y )<sup>2</sup>-y=0 |
Answer» D. 2xy +2y(y )<sup>2</sup>-y=0 | |