MCQOPTIONS
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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’)2-y=0 |
| B. | xy’+ y(y’)2-y=0 |
| C. | 2xy’+ y(y’)2-y=0 |
| D. | 2xy’+2y(y’)2-y=0 |
| Answer» D. 2xy’+2y(y’)2-y=0 | |