Find the Interval on Which the Curve $F ( x ) = \int _ { 0 } ^ { x } \frac { d t } { 11 + 11 t }$

question 79

Short Answer

Find the interval on which the curve $F ( x ) = \int _ { 0 } ^ { x } \frac { d t } { 11 + 11 t }$
is concave downward.

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