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1.2.5 Completing the square

1.2.5 Completing the square

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Question 1

A curve C C\,C has equation y=f(x)y = f(x)y=f(x), where f(x)=−3x2+18x+4f(x) = -3x^2 + 18x + 4f(x)=−3x2+18x+4

a.

Complete the square for f(x)f(x)f(x), explicitly determining the three constants in a(x+b)2+ca(x+b)^2+ca(x+b)2+c.

[3]
b.

Write down the coordinates of the maximum turning point of CCC.

[2]
Markscheme

1.2.5 Completing the square Questions

  1. A Level
  2. /Maths
  3. /1.2.5 Completing the square

8 exam-style questions on OCR A Level Maths 1.2.5 Completing the square. Each one has a worked solution and a mark scheme showing where the marks go.

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