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`        HOW to derive the relation for a tangent having equation Ax+By+C=0 intersecting  with a parabola y2=4ax ?? `
2 years ago

Vijay Mukati
2590 Points
```							Dear Student:A line will be a tangent to a parabola iff on solving two equations we should get one and only one solution.So solve the two equations – Ax + By + C = 0 and y2 = 4ax – convert them in any one variable (x or y) then after getting the quadratic in x or y apply the condition D = 0 i.e. discrimenent = 0.Best of Luck!
```
2 years ago
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• 731 Video Lectures
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• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions