Find the interval on which the graph of $f ( x ) = \ln \left( x ^ { 2 } + 1 \right)$ concave upward?
A) $( - 1,1 )$

B) $( - 1,2 )$
C) $( - 2,1 )$
D) $( - 2,2 )$
E) $( - 1,3 )$
F) $( - 3,2 )$

G) $( - 3,3 )$

H) $( - \infty , \infty )$

Question

Find the interval on which the graph of $f ( x ) = \ln \left( x ^ { 2 } + 1 \right)$ concave upward?
A) $( - 1,1 )$

B) $( - 1,2 )$ 
C) $( - 2,1 )$ 
D) $( - 2,2 )$
E) $( - 1,3 )$ 
F) $( - 3,2 )$

G) $( - 3,3 )$

H) $( - \infty , \infty )$

Quizplus · Accepted Answer

The Answer of Find the interval on which the graph of $f ( x ) = \ln \left( x ^ { 2 } + 1 \right)$ concave upward?
A) $( - 1,1 )$

B) $( - 1,2 )$ 
C) $( - 2,1 )$ 
D) $( - 2,2 )$
E) $( - 1,3 )$ 
F) $( - 3,2 )$

G) $( - 3,3 )$

H) $( - \infty , \infty )$

Find the Interval on Which the Graph Of f(x)=ln⁡(x2+1)f ( x ) = \ln \left( x ^ { 2 } + 1 \right)f(x)=ln(x2+1)