How fast can you do it?
Level
pending
Let, y=f(x) be a curve. Lines are drawn through (x,y) (Say) parallel to the coordinate axes. If, the tangent to the curve at (x,y) divide the rectangle (formed by the axes and the lines) in 1:3. What is the curve?
Parabola
None of these
Hyperbola
Ellipse
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