matlab解二阶微分方程,解出的结果如下,请问怎样画出y和时间t的函数图像?y=dsolve('101*D2y+100*Dy+1000*y=102*sin(20*pi*t)','y(0)=0,Dy(0)=0','t')解出的结果是y=exp(-(50*t)/101)*sin((10*985^(1/2)*t)/101)*((51*985^(1/2)*exp((5
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![matlab解二阶微分方程,解出的结果如下,请问怎样画出y和时间t的函数图像?y=dsolve('101*D2y+100*Dy+1000*y=102*sin(20*pi*t)','y(0)=0,Dy(0)=0','t')解出的结果是y=exp(-(50*t)/101)*sin((10*985^(1/2)*t)/101)*((51*985^(1/2)*exp((5](/uploads/image/z/1157062-22-2.jpg?t=matlab%E8%A7%A3%E4%BA%8C%E9%98%B6%E5%BE%AE%E5%88%86%E6%96%B9%E7%A8%8B%2C%E8%A7%A3%E5%87%BA%E7%9A%84%E7%BB%93%E6%9E%9C%E5%A6%82%E4%B8%8B%2C%E8%AF%B7%E9%97%AE%E6%80%8E%E6%A0%B7%E7%94%BB%E5%87%BAy%E5%92%8C%E6%97%B6%E9%97%B4t%E7%9A%84%E5%87%BD%E6%95%B0%E5%9B%BE%E5%83%8F%3Fy%3Ddsolve%28%27101%2AD2y%2B100%2ADy%2B1000%2Ay%3D102%2Asin%2820%2Api%2At%29%27%2C%27y%280%29%3D0%2CDy%280%29%3D0%27%2C%27t%27%29%E8%A7%A3%E5%87%BA%E7%9A%84%E7%BB%93%E6%9E%9C%E6%98%AFy%3Dexp%28-%2850%2At%29%2F101%29%2Asin%28%2810%2A985%5E%281%2F2%29%2At%29%2F101%29%2A%28%2851%2A985%5E%281%2F2%29%2Aexp%28%285)
matlab解二阶微分方程,解出的结果如下,请问怎样画出y和时间t的函数图像?y=dsolve('101*D2y+100*Dy+1000*y=102*sin(20*pi*t)','y(0)=0,Dy(0)=0','t')解出的结果是y=exp(-(50*t)/101)*sin((10*985^(1/2)*t)/101)*((51*985^(1/2)*exp((5
matlab解二阶微分方程,解出的结果如下,请问怎样画出y和时间t的函数图像?
y=dsolve('101*D2y+100*Dy+1000*y=102*sin(20*pi*t)','y(0)=0,Dy(0)=0','t')
解出的结果是
y=exp(-(50*t)/101)*sin((10*985^(1/2)*t)/101)*((51*985^(1/2)*exp((50*t)/101)*((50*sin(t*(20*pi - (10*985^(1/2))/101)))/101 - cos(t*(20*pi - (10*985^(1/2))/101))*(20*pi - (10*985^(1/2))/101)))/(9850*((20*pi - (10*985^(1/2))/101)^2 + 2500/10201)) + (51*985^(1/2)*exp((50*t)/101)*((50*sin(t*(20*pi + (10*985^(1/2))/101)))/101 - cos(t*(20*pi + (10*985^(1/2))/101))*(20*pi + (10*985^(1/2))/101)))/(9850*((20*pi + (10*985^(1/2))/101)^2 + 2500/10201))) - (51*cos((10*985^(1/2)*t)/101)*(99485*pi^2*sin(20*pi*t
- (10*985^(1/2)*t)/101) - (4925*sin(20*pi*t + (10*985^(1/2)*t)/101))/2 - (4925*sin(20*pi*t - (10*985^(1/2)*t)/101))/2 + 99485*pi^2*sin(20*pi*t + (10*985^(1/2)*t)/101) + 4925*pi*cos(20*pi*t - (10*985^(1/2)*t)/101) + 4925*pi*cos(20*pi*t + (10*985^(1/2)*t)/101) + (25*985^(1/2)*cos(20*pi*t - (10*985^(1/2)*t)/101))/2 - (25*985^(1/2)*cos(20*pi*t +
matlab解二阶微分方程,解出的结果如下,请问怎样画出y和时间t的函数图像?y=dsolve('101*D2y+100*Dy+1000*y=102*sin(20*pi*t)','y(0)=0,Dy(0)=0','t')解出的结果是y=exp(-(50*t)/101)*sin((10*985^(1/2)*t)/101)*((51*985^(1/2)*exp((5
继续输入:
ezplot(y,[0,2]) % t∈[0,2]时的图像.
就出来了.想要得到某一点的y的值,输入
subs(y,'t',1) 就得到t=1时的y的值.