Find the interval on which the graph of $f ( x ) = \ln \left( x ^ { 2 } + 1 \right)$ is 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

Quizplus · Accepted Answer

The Answer of Find the interval on which the graph of $f ( x ) = \ln \left( x ^ { 2 } + 1 \right)$ is 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)

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