Question 1:
A = {x: |x + 2| < 3}
B = {x: (2x – 1)³ < 8x³ – 13x² + 6x + 3}
a) Sketch the graph of A on an axis;
(2 marks)
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b) Find the equations of the two straight lines that
make up the modulus function. (3 marks)
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Equation 1 = __________ Domain = ________
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Equation 2 = ___________ Domain = ________
k
c) Find the solutions of A, express your answer in
set notation. (2 marks)
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d) Find the intersection of B. (3 marks)
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e) Find the solutions of A n B (2 marks)
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