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Two parabolas y(2) = 4a(x – 1l(1)) and x...

Two parabolas `y_(2) = 4a(x – 1l_(1))` and `x_(2) = 4a(y – l_(2))` always touch one another, the quantities `l_(1)` and `l_(2)` are both variable. Locus of their point of contact has the equation

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A DAS GUPTA-Miscellaneous Exercises-Exercise
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