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Why does the minimum for y=5sin(3x-53.1) occur at 3x-53.1=270 and not -90?

Thanks!
Original post by Zenarthra
Why does the minimum for y=5sin(3x-53.1) occur at 3x-53.1=270 and not -90?

Thanks!


i assume it's because you want the smallest positive value of x such that it is minimised. Otherwise -90 works fine.
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davros
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Original post by Zenarthra
Why does the minimum for y=5sin(3x-53.1) occur at 3x-53.1=270 and not -90?

Thanks!


A local minimum occurs at both values. But if your domain is restricted then only one of these may be relevant.
Reply 3
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Zenarthra
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