已知由方程x2+y2=ey确定函数y=y(x),则dy/dx=_____.
已知由方程x2+y2=ey确定函数y=y(x),则dy/dx=_____.
【正确答案】:2x+2y(dy/dx)=ey(dy/dx),dy/dx=2x/(ey-2y).
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