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Cubic functions, Quadratic & Trigonometric functions R93,33   Add to cart

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Cubic functions, Quadratic & Trigonometric functions

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This set of practice questions is designed to help Grade 12 students prepare for their cubic, Quadratic and trigonometric functions exams.

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  • June 13, 2024
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  • 2023/2024
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TRIGONOMETRIC FUNCTIONS
BY MASALA LOVEWELL MULAUDZI



Grade 12 Functions Question Paper



Instructions:

1. Read all questions carefully.

2. Answer all questions.

3. Show all workings and calculations.

4. The use of a non-programmable calculator is allowed.

5. Write neatly and legibly.



Total Marks: 50

Duration: 90 minutes




QUESTION 1: 10 Marks
Given: 𝑓(𝑥) = −𝑥 3 + 6𝑥 2 − 9𝑥 + 4 𝑎𝑛𝑑 𝑓(4) = 0
8.1 Determine the coordinates of the turning points 𝑜𝑓 𝑓. (2)
8.2 Draw a sketch graph of f. Clearly label all the intercepts with the axes and any turning
points. (4)

8.3 Use the graph to determine the value(s) of k for which −𝑥 3 + 6𝑥 2 − 9𝑥 + 4 = 𝑘 will have
three real and unequal roots. (2)
8.4 The line g(x) = ax + b is the tangent to f at the point of inflection of 𝑓. Determine the
equation of 𝑔. (2)

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