Convex function Page 89 (6.2) #211

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dhananjay014 opened this Issue Oct 29, 2016 · 0 comments

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@dhananjay014

There are two equivalent definitions of a concave function. The first is that it’s second derivative is always non-negative. The second, more geometric, definition is that any chord of the function lies above it.

I think the author means convex function here

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