第一个求这个函数的导数
答案：sin(原分式)* (16*(e^8x))/((1+e^8x)^2)
通过隐式求导法求（那个应该是e^x吧,我按e^x算的,不是ex）
y'=(4-(e^x /y))/( 1-((e^x)/(y^2))).写成竖式就看明白了
求导数
这个简单：1/(e^x+xe^x) * (2e^x+xe^x)
满意的话就确定下来,上次给你答得题还没给个确认呢.哎
两个数学题 求导1.Find the derivative of the function.y=cos((1-e^(8x
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