Integration - Area Enclosed by the Curve and the X-Axis

Integration - Area Enclosed by the Curve and the X-Axis

TGM Original Questions

Find the areas between the following curves and the \(x\)-axis, within the given boundaries.

  1. \(y = 25 - x^2\), \(x = -4\), \(x = 1\)
  2. \(y = (x - 3)(x + 4)(x + 8)\), \(x = -8\), \(x = 3\)
  3. \(y = x^3 + 2\), \(x = -1\), \(x = 2\)
  4. \(2y = 2 + x^2\), \(x = -1\), \(x = 1\)

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Answer:(a) \(\dfrac{310}{3}\text{ units}^2\); (b) \(\dfrac{2099}{4}\text{ units}^2\); (c) \(\dfrac{39}{4}\text{ units}^2\); (d) \(\dfrac73\text{ units}^2\)

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