Matlab-Solving Second Order ODEs

Objective: Please find the attached code,code explanation,results and error codes below. %This is a programme to solve the second order equation and to animate the results. clear all close all clc l=1; m=1; b=0.05; g=9.81; %initial_condition theta_0=[0;3]; %Time points T_span=linspace(0,20,300); %solving ode [t,results]=ode45(@(t,theta)…