Is it positive?

Algebra Level pending

The function f ( x ) = 1 sin ⁡ x + 2 f\left( x \right)=\frac { 1 }{ \sin { x+2 } } is positive for every x x belongs to R R

True False

Αλέξανδρος Μυλωνάς by Αλέξανδρος Μυλωνάς , 20, Greece

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1 solution

We know that for every x belongs to R sin x :[-1,1] Then by substituting the minimum negative value of sin x, f(x) is still positive. Hence f(x) must be positive

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Nice solution

Αλέξανδρος Μυλωνάς - 3 years, 2 months ago

If you want answer to be True/False, you should make the problem a statement, not a question.

Marta Reece - 3 years, 2 months ago

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Thnak you for your advice. The question has been edited

Αλέξανδρος Μυλωνάς - 3 years, 2 months ago

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