[R] maximum likelihood using nlm to estimate 4 variables

Hi I need help I am new to R and am having problems estimating parameters out of 3stage constrained function. I have constructed a code as below and my data are two colomns of R_j and R_m(sample given below). R_j and R_m represents the dependent and independent variables respectively. The paramet

[R] maximum likelihood using nlm to estimate 4 variables

Hi I need help I am new to R and am having problems estimating parameters out of 3stage constrained function. I have constructed a code as below and my data are two colomns of R_j and R_m(sample given below). R_j and R_m represents the dependent and independent variables respectively. The paramet