Let $f ( t ) = \frac { 19 } { 3 + 4 e ^ { - t / 10 } }$ .Which value of t corresponds to a possible inflection point for f (t)?
A)There is no inflection point.
B) $\frac { 3 } { 4 } \ln ( 110 )$
C) $\ln \left( \frac { 3 } { 4 } \right)$
D) $110 \ln \left( \frac { 4 } { 3 } \right)$

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The Answer of Let $f ( t ) = \frac { 19 } { 3 + 4 e ^ { - t / 10 } }$ .Which value of t corresponds to a possible inflection point for f (t)?
A)There is no inflection point.
B) $\frac { 3 } { 4 } \ln ( 110 )$
C) $\ln \left( \frac { 3 } { 4 } \right)$
D) $110 \ln \left( \frac { 4 } { 3 } \right)$

Let f(t)=193+4e−t/10f ( t ) = \frac { 19 } { 3 + 4 e ^ { - t / 10 } }f(t)=3+4e−t/1019​

Let $f ( t ) = \frac { 19 } { 3 + 4 e ^ { - t / 10 } }$