P. 244, line -11

The line should be Failed to parse (unknown function "\being"): {\displaystyle \int_0^t \Xi^{-1}(\tau)g(\tau) d \tau = \int_0^t \being{bmatrix} -\frac{1}{2} \\ \frac{1}{2} e^{-2 t} \end{\bmatrix} d \tau }