d'Alembert solution of the 1-D wave equation

Let $u=u(x,t)$ be the solution of

$$\frac{\partial^2u}{\partial t^2}-\frac{\partial^2u}{\partial x^2}=0, x\in\mathbb R, t>0,\qquad u(x,0)=1+x^2,\qquad \frac{\partial u}{\partial t}(x,0)=x+1.$$

Then the value of $u(1,1)$ is