Write an Integral Giving the Arc Length of the Graph $\mathbf { P }$

Short Answer

Write an integral giving the arc length of the graph of the equation from $\mathbf { P }$ to $\mathbf { Q }$ .
$$y = \frac { 1 } { x ^ { 2 } + 2 } ; \mathrm { P } \left( 1 , \frac { 1 } { 3 } \right) , \mathrm { Q } \left( 3 , \frac { 1 } { 11 } \right)$$