Kimberley's answer to Amira dania's Secondary 4 A Maths question.
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Q3 and 4 are exactly the same.
Key notes:
1. Familiarise yourself with the cos x graph.
2. y = 2 + cos x signifies a shift of the cos x graph 2 units up along the y axis
3. y = 5 cos x signifies an increase in the amplitude of the cos x graph to 5 units.
4. |y| signifies a reflection of the negative region of the graph into the positive region
Key notes:
1. Familiarise yourself with the cos x graph.
2. y = 2 + cos x signifies a shift of the cos x graph 2 units up along the y axis
3. y = 5 cos x signifies an increase in the amplitude of the cos x graph to 5 units.
4. |y| signifies a reflection of the negative region of the graph into the positive region
Date Posted:
6 years ago
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