Question 4) Jacobi iteration: Given is the matrix $$ \mathbf {A}=\left(\begin{array}{cccc} 3& -1 & 0&O -1 & 3 & -1 & 0W 0 & -1 & 3 & -1 W 0 & 0& -1 & 3 \end{array} ight) $$ and the vector $b=(1,1,1,1)^{\top} $ 1. Does the Jacobi method converge for this matrix? 2. Carry out three Jacobi iterations to determine the solution $x$ of the linear system of equations $A \cdot x=b$, starting from the starting value $x^{(0)}=(0,0,0$, $0)^{\top]$ CS.SD. 159