Question: Runge Kutta fourth order method

 Anyone can explain to me this program using Runge Kutta fourth order method


Anyone can explain to me the Runge Kutta method using the following equations and conditions??


diff (diff (diff (f (eta), eta), eta), eta)+ f (eta)* diff (diff (f (eta), eta), eta)=0

diff (diff (theta (eta), eta), eta)+ f (eta)* diff (theta (eta), eta)=0

f(0) = 0, (D(f))(0) = 0, (D(f))(5) = 1

theta(0) = 1, theta(5) = 0

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