Final answer:
To find the derivative (or Jacobian) matrix, J, of a nonlinear system, take the partial derivatives of each equation with respect to each variable and arrange them in a matrix.
Step-by-step explanation:
To find the derivative or Jacobian matrix, J, of the nonlinear system given by F(x,y,z)=0, we need to take the partial derivatives of each equation with respect to each variable. Let's say we have three equations F1(x,y,z)=0, F2(x,y,z)=0, and F3(x,y,z)=0. The Jacobian matrix J will have three rows and three columns, with each entry representing the derivative of one equation with respect to one variable. For example, the entry in the first row and first column of J will be the partial derivative of F1 with respect to x.