Find an equation of the tangent line to the parabola at the given point and find the x-intercept of the line
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Find an equation of the tangent line to the parabola at the given point and find the x-intercept of the line

[From: ] [author: ] [Date: 11-12-03] [Hit: ]
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x^2 = 2y, (7, 49/2)

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If P ≡ ( x₁, y₁ ) ≡ ( 7, 49/2 ),

then the eq of tgt to parabola x² = 2y at P is

... xx₁ = y + y₁

∴ 7x = y + (49/2) ........................................… Ans.(i)

... Putting y = 0, 7x = 49/2

∴ X-intercept = 7/2 ........................................… Ans.(ii)
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