1 1 1 1 1
m = $\left[ \begin{matrix} {x}^{2} & {x}^{3} & {x}^{4} & {x}^{5} & {x}^{6} & {x}^{7} & {x}^{8} \\ {x}^{3} & {x}^{4} & {x}^{5} & {x}^{6} & {x}^{7} & {x}^{8} & {x}^{9} \\ {x}^{4} & {x}^{5} & {x}^{6} & {x}^{7} & {x}^{8} & {x}^{9} & {x}^{10} \\ {x}^{5} & {x}^{6} & {x}^{7} & {x}^{8} & {x}^{9} & {x}^{10} & {x}^{11} \\ {x}^{6} & {x}^{7} & {x}^{8} & {x}^{9} & {x}^{10} & {x}^{11} & {x}^{12} \\ {x}^{7} & {x}^{8} & {x}^{9} & {x}^{10} & {x}^{11} & {x}^{12} & {x}^{13} \\ {x}^{8} & {x}^{9} & {x}^{10} & {x}^{11} & {x}^{12} & {x}^{13} & {x}^{14}\end{matrix} \right]$
d = $0$
time taken = 0.589996