Cannot perform the operation: {real affine} .* {convex} how to solve (ax+b)/(cx+d))

[Mark_L_Stone]

How to solve this problem

You have violated CVX’s rules. S_src appears to be a linear fractional form, so I think you ought to be able to handle this problem per section 4.3.2 “Linear-fractional programming” of “Convex Optimization” by Boyd and Vandenberghe https://web.stanford.edu/~boyd/cvxbook/ . You should probably also read the material earlier in that book on linear fractional functions.