Xlog( 1+ Y/(X+Y) ): DCP rules, and build-in functions in cvx

[jackfsuia (Jack)]

@Sly-ney

xlog(1+ay/(by+x))

is just xlog( ( (b+a)y+x ) / (by+x) ), therefore use b+a in place of a and b in place of c of

X*log((ay+x)/(cy+x)) a>c

[image] how to be expressed by cvx？

it might work out.