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1) Find the period and the amplitude.

y= 3 sin 2x

Please explain!!! I do not know how to do this.

The amplitude is how far y can increase above (or decrease below) the average value. The average value is zero. The maximum value is 3. The amplitude is therefore 3.

The period is how much x must increase in fr y to return to the original value (regardless of x).

2x must increase by 2 pi for that to happen. Therefore the period is pi

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