未分类题

求下列函数的一阶偏导数(其中f具有一阶连续偏导数): style='color: rgb(51, 51, 51); text-transform: none; text-indent: 0px; letter-spacing: normal; font-family: zuoyeFont_mathFont, "Microsoft Yahei", 宋体, sans-serif; font-size: 16px; font-style: normal; font-weight: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); font-variant-ligatures: normal; font-variant-caps: normal; -webkit-text-stroke-width: 0px;'>(1)u=f(x^2-y^2,e^(w^y)) (2)=f(w/y,y/z) (3)=f(x,xy,xyz)

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