MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the solution of the equation(y + x( xy)(x + y))dx (y + y( xy)(x + y))dy = 0? |
| A. | x<sup>2</sup> + y<sup>2</sup> = 2tan<sup>-1</sup>( (y/x)) + c |
| B. | x<sup>2</sup> + y<sup>2</sup> = 4tan<sup>-1</sup>( (y/x)) + c |
| C. | x<sup>2</sup> + y<sup>2</sup> = tan<sup>-1</sup>( (y/x)) + c |
| D. | x<sup>2</sup> + y<sup>2</sup> = 2tan<sup>-1</sup>( (x/y)) + c |
| Answer» C. x<sup>2</sup> + y<sup>2</sup> = tan<sup>-1</sup>( (y/x)) + c | |