用matlab求解常系数微分方程组并画出图像dx/dt=220-0.25x-0.000015xy²dy/dt=0.000015xy²-0.64y+0.15zdz/dt=0.64y-0.15z-0.7z初始值为x=68,y=109,z=82跪求好人,求解和画图,时间t定义为0-60,需要代码,跪谢了
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![用matlab求解常系数微分方程组并画出图像dx/dt=220-0.25x-0.000015xy²dy/dt=0.000015xy²-0.64y+0.15zdz/dt=0.64y-0.15z-0.7z初始值为x=68,y=109,z=82跪求好人,求解和画图,时间t定义为0-60,需要代码,跪谢了](/uploads/image/z/8695617-33-7.jpg?t=%E7%94%A8matlab%E6%B1%82%E8%A7%A3%E5%B8%B8%E7%B3%BB%E6%95%B0%E5%BE%AE%E5%88%86%E6%96%B9%E7%A8%8B%E7%BB%84%E5%B9%B6%E7%94%BB%E5%87%BA%E5%9B%BE%E5%83%8Fdx%2Fdt%3D220-0.25x-0.000015xy%26%23178%3Bdy%2Fdt%3D0.000015xy%26%23178%3B-0.64y%2B0.15zdz%2Fdt%3D0.64y-0.15z-0.7z%E5%88%9D%E5%A7%8B%E5%80%BC%E4%B8%BAx%3D68%2Cy%3D109%2Cz%3D82%E8%B7%AA%E6%B1%82%E5%A5%BD%E4%BA%BA%2C%E6%B1%82%E8%A7%A3%E5%92%8C%E7%94%BB%E5%9B%BE%2C%E6%97%B6%E9%97%B4t%E5%AE%9A%E4%B9%89%E4%B8%BA0-60%2C%E9%9C%80%E8%A6%81%E4%BB%A3%E7%A0%81%2C%E8%B7%AA%E8%B0%A2%E4%BA%86)
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