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11.8 Finding Areas

11.8 Finding Areas

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Question 18

\The figure shows a sketch of the cross-section of a custom-engineered support beam, bounded by the curves C1C_1C1​ and C2C_2C2​ with equations\C1:y=x3−6x2+5x+12,x≥0C_1 : y = x^3 - 6x^2 + 5x + 12, \quad x \ge 0C1​:y=x3−6x2+5x+12,x≥0\C2:y=−x2+3x+4,x≥0C_2 : y = -x^2 + 3x + 4, \quad x \ge 0C2​:y=−x2+3x+4,x≥0\The curves C1C_1C1​ and C2C_2C2​ intersect at the points AAA and BBB as shown in the figure. Point AAA has coordinates (2,6)(2, 6)(2,6).\Using algebra and showing all steps of your working,

a.

find the coordinates of the point BBB.

[4]
b.

The finite region RRR, shown shaded in the figure, is the cross-sectional area enclosed between C1C_1C1​ and C2C_2C2​.\Use algebraic integration to find the exact area of RRR.

[6]
Markscheme

11.8 Finding Areas Questions

  1. A Level
  2. /Maths
  3. /11.8 Finding Areas

28 exam-style questions on Edexcel A Level Maths 11.8 Finding Areas. Each one has a worked solution and a mark scheme showing where the marks go.

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