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Awarded to 巴卡木梨 on 22 Apr 2024
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隐函数求导遇到问题
syms x y F=atan(y/x)-log(sqrt(x^2+y^2)) Fxx=diff(F,x,2) Fyy=diff(F,y,2) Fxy=diff(diff(F,x),y) Fx=diff(F,x) Fy=diff(F,y) d...
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