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Let f(x)=3x21f ( x ) = \frac { 3 } { x ^ { 2 } } - 1

Question 119

Multiple Choice

Let f(x) =3x21f ( x ) = \frac { 3 } { x ^ { 2 } } - 1 If c(1,3) c \in ( 1,3 ) such that 133x21dx2=f(c) ,\frac { \int _ { 1 } ^ { 3 } \frac { 3 } { x ^ { 2 } } - 1 d x } { 2 } = f ( c ) , then c is


A) 13\frac { 1 } { \sqrt { 3 } }
B) 13\frac { 1 } { 3 }
C) 3
D) 2\sqrt { 2 }
E) 3\sqrt { 3 }

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