parametric equations

Question: 1 [2 marks] Find the second derivartive of the parametric equations x = tant and y= sect Question: 2 [2 marks] Find the equation of the tangent line to the parametric curve, x = sint, y = 2t + cost at the point t = 0 [1 mark] Question: 3 Find the stationary points of the parametric curve x = t+t2 + 8, y= t-t2
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