x²+xy=1分别求一阶导数和二阶导数求一阶导数时可以进行如下运算:d(x²+xy)=d12xdx+xdy+ydx=0整理一下就可得一阶导数那么求二阶导数时可以进行如下运算吗:d( 2xdx+xdy+ydx)=d0吗,如果可以,接
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![x²+xy=1分别求一阶导数和二阶导数求一阶导数时可以进行如下运算:d(x²+xy)=d12xdx+xdy+ydx=0整理一下就可得一阶导数那么求二阶导数时可以进行如下运算吗:d( 2xdx+xdy+ydx)=d0吗,如果可以,接](/uploads/image/z/13381077-21-7.jpg?t=x%26%23178%3B%2Bxy%3D1%E5%88%86%E5%88%AB%E6%B1%82%E4%B8%80%E9%98%B6%E5%AF%BC%E6%95%B0%E5%92%8C%E4%BA%8C%E9%98%B6%E5%AF%BC%E6%95%B0%E6%B1%82%E4%B8%80%E9%98%B6%E5%AF%BC%E6%95%B0%E6%97%B6%E5%8F%AF%E4%BB%A5%E8%BF%9B%E8%A1%8C%E5%A6%82%E4%B8%8B%E8%BF%90%E7%AE%97%EF%BC%9Ad%28x%26%23178%3B%2Bxy%29%3Dd12xdx%2Bxdy%2Bydx%3D0%E6%95%B4%E7%90%86%E4%B8%80%E4%B8%8B%E5%B0%B1%E5%8F%AF%E5%BE%97%E4%B8%80%E9%98%B6%E5%AF%BC%E6%95%B0%E9%82%A3%E4%B9%88%E6%B1%82%E4%BA%8C%E9%98%B6%E5%AF%BC%E6%95%B0%E6%97%B6%E5%8F%AF%E4%BB%A5%E8%BF%9B%E8%A1%8C%E5%A6%82%E4%B8%8B%E8%BF%90%E7%AE%97%E5%90%97%EF%BC%9Ad%28+2xdx%2Bxdy%2Bydx%29%3Dd0%E5%90%97%2C%E5%A6%82%E6%9E%9C%E5%8F%AF%E4%BB%A5%2C%E6%8E%A5)
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