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Biology, 30.01.2021 14:10 arri05

Express parametrically a point on a parabola (y-1)^2=x find the equation of a tangent at a point (9a,6a)
The chord joining p(ap^2,2ap) and Q(aq^2,2aq) passes through the foot of the directrix point (-a,0) show that pq=1

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Express parametrically a point on a parabola (y-1)^2=x find the equation of a tangent at a point (9...
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