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Learning objective

1. Estimate the slopes of curves by drawing tangent lines. 2. Utilize the derivatives of functions in the form ax^n, where 'a' is a rational constant and 'n' is a non-negative integer, including simple combinations of up to three of these functions. 3. Use differentiation to find slopes and identify stationary points (turning points). 4. Differentiate between maximum and minimum points using methods such as: • creating an accurate sketch • applying the second derivative test • examining the gradient on either side of a turning point. Note that candidates are not required to find points of inflection.

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Cambridge IGCSE MathematicsExtended Algebra and graphsSupplement content

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Quick explanation

1. Estimate the slopes of curves by drawing tangent lines. 2. Utilize the derivatives of functions in the form ax^n, where 'a' is a rational constant and 'n' is a non-negative integer, including simple combinations of up to three of these functions. 3. Use differentiation to find slopes and identify stationary points (turning points). 4. Differentiate between maximum and minimum points using methods such as: • creating an accurate sketch • applying the second derivative test • examining the gradient on either side of a turning point. Note that candidates are not required to find points of inflection

  • This point belongs to Differentiation, especially Differentiation outcomes.
  • You need to be able to 1. Estimate the slopes of curves by drawing tangent lines. 2. Utilize the derivatives of functions in the form ax^n, where 'a' is a rational constant and 'n' is a non-negative integer, including simple combinations of up to three of these functions. 3. Use differentiation to find slopes and identify stationary points (turning points). 4. Differentiate between maximum and minimum points using methods such as: • creating an accurate sketch • applying the second derivative test • examining the gradient on either side of a turning point. Note that candidates are not required to find points of inflection.
  • The key ideas to know are Calculate, Determine, and Describe.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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CalculateDetermineDescribeShow

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Paper 2 structured question: Differentiation

Paper 2Core or Extended Mathematics6 marks

Description

Function Analysis

Consider the function f(x) = 3x^4 - 8x^3 + 6.

  1. a

    Calculate the derivative f'(x) of the function.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    Determine the stationary points of f(x).

    Aim for approximately 2 distinct marking points.

    [2]
  3. c

    Explain which stationary point is a maximum and which is a minimum using the second derivative test.

    Aim for approximately 2 distinct marking points.

    [2]
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