### Home > CALC > Chapter 8 > Lesson 8.3.3 > Problem 8-129

8-129.

**Multiple Choice: **Given is concave up for …

no values of

or

Recall that candidates for points of inflection occur where the 2nd-derivative equals zero AND where the 2nd-derivative does not exist.

After you identify where and where

*DNE, check the regions before, after and between those candidates: if*

*, then*

*is concave up.*