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# Periodicity help

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1. Hi, how could I find the period for each of these

1) x(t) = 8 sin 2t

Period = 2pi/ absolute 2 = pi ???

2 ) x(t) = 8 sin ^2(t)
3) x(t) = 8 sin 2t
4) x(t) = 2 |cos t|
2. BUMP
3. Well the period is the measure of how often it repeats. has a period of since it's a stretch parallel to x axis scale factor 0.5 right , so the curve is 'squashed'. For the second one if you're having trouble use the identity and it should be a bit easier.
For the fourth one try sketching the curve.
4. (Original post by B_9710)
Well the period is the measure of how often it repeats. has a period of since it's a stretch parallel to x axis scale factor 0.5 right , so the curve is 'squashed'. For the second one if you're having trouble use the identity and it should be a bit easier.
For the fourth one try sketching the curve.
Cheers!

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Updated: August 18, 2016
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