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hey! yes theyre out of cambridge thanx for helping me ^.^ yup the answers to the 2nd question is right lol so the first question is a bit of an odd one eh? *confused*

can someone pls help me with these questions: 3 unit - Tangents and Normals: Parametric Approach If y = 1-2x is a tangent to x^2 = 4ay, find a and the point of contact. This is wat i did: solve simulataneously to get: x^2 = 4a(1-2x) x^2 + 8ax - 4a = 0 -- (1) let discriminant = 0 64a^2 =...