Matlab/Octave Tutorial

•If you want diff_f to retain its original form:>> subs(diff_f,{x,a,b,c},{1,2,3,4})ans = -1.0708>> diff_fdiff_f = -exp(-a*x)*x^(3*b-1)*(a*sin(c*x)*x-3*b*sin(c*x)-cos(c*x)*c*x)•If you want diff_f to include these substitutions:>> diff_f=subs(diff_f,{x,a,b,c},{1,2,3,4}), diff_fdiff_f = -1.0708diff_f = -1.0708135