title: Least squares assuming functional form of the solution
body: <p>I am trying to solve the following least squares problem:</p>
  
  <p>b(alpha)=A(alpha,beta)x(beta)</p>
  
  <p>I am trying to use an alternative approach, which is to assume the functional form of x(beta) through the use of tunable parameters, say x(beta, a, c). How can I solve this problem in MATLAB for a least squares solution for those parameters?</p>