2025 TJC Promo Q9

2025 TJC Promo Q9

Junior College 1
10 marks

A curve \(C\) is defined by the parametric equations

  1. Find the coordinates of the point on \(C\) where the tangent is parallel to the \(x\)-axis.[3]
  2. Sketch \(C\). (You do not need to give the coordinates of the axial intercepts)[1]
  3. The line \(N\) is the normal to \(C\) at the point where \(t=2\). Show that the equation of \(N\) is \(3y-x=29\).[2]
  4. Without the use of a graphing calculator, show that the line \(N\) does not meet the curve \(C\) again.[4]

Solution:

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Answer:\((2,1)\); \(3y-x=29\); no further intersection

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