Is a function concave if and only if f(x)/x decreasing?

Hayley Mcclain

Hayley Mcclain

Answered question

2022-11-02

Is a function concave if and only if f ( x ) / x decreasing?

Answer & Explanation

kavdawg8w8

kavdawg8w8

Beginner2022-11-03Added 20 answers

Consider
f ( x ) = { 2 x 0 x < 1 3 2 3 1 3 x < 2 3 x 2 3 x 1

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