Where does g concave up?

Question

Shown is the graph of g", the second derivative of function g. Where is function g concave up?

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Answer 1 · 2018-02-03T08:30:57

From #x=2# to #x=4#

It looks like to me from those two points #(x=2)# and #(x=4)#, that the graph of #g''# is concave up.

Answer 2 · 2018-02-03T13:29:36

#g# is concave up on #(-oo,5)#.

#g# is concave up on any interval on which #g''# is positive.

From the graph we see that this is on #(-oo,5)#