% Numerical Mathematics and Computing, Fifth Edition % Ward Cheney & David Kincaid % Brooks/Cole Publ. Co. % (c) 2003 % % file: ode45file2.m % % This M-file is invoked by the file 'rkf2_ode45.m'. function xprime = ode45file2(t,X) xprime = zeros(5,1); xprime(1) = X(2); xprime(2) = X(1) - X(3) - 9*X(2)^2 + X(4)^3 + 6*X(5) + 2*t; xprime(3) = X(4); xprime(4) = X(5); xprime(5) = X(5) - X(2) + exp(X(1)) - t;