在matlab中用隐式梯形积分法对二阶微分方程(例如电路)进行编程

通过该程序可以求出某个时刻(t=?)时的面积值
2025-06-24 17:37:06
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回答1:

>> clear >> syms a b c d e; >> y=dsolve('a*D2y+b*Dy+c*y=0','y(0)=d','Dy(0)=e') y = (2*a*e + b*d + d*(b^2 - 4*a*c)^(1/2))/(2*exp((t*(b - (b^2 - 4*a*c)^(1/2)))/(2*a))*(b^2 - 4*a*c)^(1/2)) - (2*a*e + b*d - d*(b^2 - 4*a*c)^(1/2))/(...7795