My code is as follow：

```
cvx_begin
variable x;
minimize(x-1000*log(1+0.01*x/(x+1));
subject to
x>0;
cvx_end
```

Then it reported:

Disciplined convex programming error:

Cannot perform the operation: {real affine} ./ {real affine}

log(1+x/y) is a kind of formation of **Information entropy**，and my obj function is concave. Is there any ways to rewrite this object function ? Thank you.