A cosine curve
A cosine curve
6 marks
TGM Original
Sketch y=2cos(12x)+1 for 0 <= x <= 720, with x measured in degrees. Label endpoints and turning points. State the amplitude, period and range on this domain.
Solution:
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Answer:\(A=2\); \(T=720^\circ\); \(-1\le y\le 3\); \(\text{key points:}\hspace{0.5em}(0,3),\ (180,1),\ (360,-1),\ (540,1),\ (720,3)\).
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