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    				| 1. | The slope of the tangent at `(x,y)` to a curve passing through `(2,1)` is `(x^(2)+y^(2))/(2xy)`, then the equation of the curve isA. `x(x^(2)+y^(2))=10`B. `x(x^(2)-y^(2))=6`C. `2(x^(2)-y^(2))=6y`D. `2(x^(2)-y^(2))=3x` | 
| Answer» Correct Answer - D | |