Thefollowing are the FORTRAN programs (FORTRAN 90) thatwere used to compute the real root of a nonlinear equations system, byusing the gradients method. … CALL GRADIENTS (X01,X02, YT1, YT2, XP, YP, ZP, X, Y, Z, CT) … SUBROUTINE GRADIENTS (X01,X02, YT1, ...