Dear sir , I am getting error index exceeds matrix dimension in RK method of order four. Actually i am unable to understood as in my case m_cp,m_rg,m_di,v_cp,v_cpdot values are changing with time so i have given for loop but while executing getting error
"Index exceeds matrix dimensions. Error in brain (line 37) m_cp(m)=(m_rg(m)+m_di(m)-((v_aft*gamma*p_cp(m)*v_cpdot(m))/(r*th*v_cp(m))))/(1+(v_aft*gamma*r*tcp)/(r*th*v_cp(m)));
What to do here in order to get result..here all other values are constants so we cant give loop is it possible to solve or not..
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