Let f"(x)<0, f(0) =0, prove that for any x₁>0, x₂>0, f(x₁+x₂) >f(x₁)+f(x₂). - 道道学堂问答

Let f"(x)<0, f(0) =0, prove that for any x₁>0, x₂>0, f(x₁+x₂) >f(x₁)+f(x₂).

匿名用户最后更新于 2021-08-16 17:33 数学类Mathematics

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Let f"()<0, f(O) =0, prove that for any x1>0, >0, f(x +x2) >f()+f(x).

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