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Find the correct pair of statements: (i) The point of intersection of tangents at 't_(1)' and 't_(2) on the parabola y^(2)=4x is (t_(1)t_(2),t_(1)+t_(2)) (ii) Ax^(2)+Bxy+Cy^(2)+Dx+Ey+F=0 represents an ellipse if B^(2)-4ACgt0 (iii) The equation of tangent at (1,-3) to the parabola x^(2)+6x+4y+5=0 is 2x+y+1=0 (iv) Parametric representation of a conic is unique. |
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Answer» (i) and (III) are CORRECT |
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