2025 WGS P2 Q2

2025 WGS P2 Q2

Secondary 4
5 marks
  1. State the amplitude and period of the graph of \(y=3\sin2x+1\).[2]
  2. On the axes below, sketch the graph of \(y=3\sin2x+1\) for \(0\le x\le2\pi\).[3]

Solution:

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Answer:(a) Amplitude \(3\), period \(\pi\). (b) Two sine cycles with maximum \(4\), minimum \(-2\), midline \(y=1\).

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