From $V{y}_{i,n+1}-L{x}_{i,n}=d_i$ and $y_{i,n}=K_i{x}_{i,n},$ derive the following form of The kremser equation: $*$start at n$=0$

$\frac{y_{i,N+1}-K_i{x}_{i,N}}{y_{i,1}-K_i{x}_{i,0}}=(\frac{L}{K_{i}V}{)}^N$