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I am reading Prime Obsession and john talks about Big o. He goes if Function A is trapped within + and - of function B then F(A) is Big O of F(B)

So, y=Sin x is Big O of Y = 1 right?

He also goes that if F(A) is Big O of F(B) then so is any multiple of F(A).

so y=2sinx is also big O of Y=1? Even though is breaks the limit infinite amount of times?

Any clarification appreciated. Thanks!

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# Question about big O

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