{\frac {{\it du}}{{\it dx}}}=998\,u+1998\,v
{\frac {{\it dv}}{{\it dx}}}=-999\,u-1999\,v
u \left( 0 \right) =1
v \left( 0 \right) =0
0<x<10
Second Order Backward Difference formula
{\frac {f_{{k-2}}-4\,f_{{k-1}}+3f_{{k}}}{h}}
I'm trying solve this numerically in matlab, but can't seem to...