How to modify errors in my CVX code？

[Mark_L_Stone]

@Michal_Adamaszek 's refromulation at How to express the function "1/(exp(x^2)-1)" - #2 by Michal_Adamaszek works for your case.

Use 2^x instead of exp(x), and it can all be vectorized.

cvx_begin;
variable X(1,K) nonnegative
variable t(1,K) nonnegative
1 >= 2^(-X) + inv_pos(1+t)
% Use t in place of your g
cvx_end

Please check to make sure I didn’t make any mistakes.