Siow Lin Hoe's answer to help me pls's Secondary 3 A Maths Singapore question.
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A and C are same frequency but different amplitude. (1 and 7).
Simple method, when x = 1, A and C are sin(4pi), so to sketch 2 complete cycle of sin chart. 2pi = 1 cycle.
Where B is sin (3pi), meaning which it only has 1 and half of sin chart. With amplitude of 5.
Simple method, when x = 1, A and C are sin(4pi), so to sketch 2 complete cycle of sin chart. 2pi = 1 cycle.
Where B is sin (3pi), meaning which it only has 1 and half of sin chart. With amplitude of 5.
Date Posted:
3 years ago
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