In the solution of $\frac{d^{2} y}{d x^{2}}-2 \frac{d y}{d x}+y=0,$ if the values of the integration constants are identical and one of the initial conditions is specified as $y(0)=1$, the other initial condition $y^{\prime}(0)=$_______________

In the solution of $\frac{d^{2} y}{d x^{2}}-2 \frac{d y}{d x}+y=0,$ if the values of the integration constants are identical and one of the initial conditions is specified as $y(0)=1$, the other initial condition $y^{\prime}(0)=$_______________

127