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Maths AA HL · Paper 1 · Q7

[4 marks]

Find the equation of the tangent to y = x³ − 2x at x = 1.

  1. dy/dx = 3x² − 2M1
  2. at x = 1: m = 3 − 2 = 1A1
  3. y − (−1) = 1 · (x − 1)M1
  4. y = x − 2A1

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