# Runge Kutta 2. order using the Ti89

Say you have use the Runge Kutta-4 (RK4) Method to solve a 2. order Differential Equation such as : y”+5y’+y=Sin(x) y'(0)=-1 y(0)=1 h=.5 solve until y at x =1 Use the Numerical Made Easy app at TI89.com option F3 7 : After entering just press ENTER to view the solution: It is very easy to… (read more)