How to express sum((ax+b)/(cx+d)) in cvx

1

I know this.

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But how to express sum((ax+b)/(cx+d)) in cvx?

2

f=p+q*inv_pos(c*x+d)
you can refer to the CVX user’s guide

3

right，I forget the sum
sum(p+q*inv_pos(c*x+d))