f(arctan(y/x))=xy求y对x的一阶导.

f(arctan(y/x))=xy求y对x的一阶导. 求x^2+xy=arctan(xy)所确定的隐函数y=f(x)的导数 设y=arctan x,求f'(0),f(0). 已知f(x,y)=x^2arctan(y/x)-y^2arctan(x/y)求它的混合二阶偏导 f(x,y)=arctan(x+y)/(1-xy)怎么求导? 请问f(x,y,z)=z×arctan(y/x)对x的偏导数怎么求? f(x^2-y^2,x-y)=x+y+x^2-xy,求f'(x,y)对y求导 f(x,y)=arctan(xy),则fx=(1,1)=? y=2x*arctan(y/x),求y‘’ x^2+y^2=e^(arctan（y/x）),求dy/dx令F(x,y)=x^2+y^2-e^arctan(y/x)=0对x求偏导 Fx = 2x-e^arctan(y/x) * 1/[1+(y/x)^2] * [-y/(x^2)]=2x + y/(x^2+y^2) * e^arctan(y/x)然后e^arctan(y/x)用题目中的x^2+y^2代替 就可以把即Fx=2x+y对y求偏导 z=arctan(x/y),求dz 设F(X,Y)=arctan(x/y),求df|(1,1) z=arctan【(x+y)/(1-xy)】的偏导数 讨论函数z=arctan(x+y)/(1-xy)的连续性方程是z=arctan[(x+y)/(1-xy)] 设z=arctan(xy),y=e^x ,求dz/dx ． z=arctan(xy),而y=e^x,求dz/dy 求Z=arctan(xy),而y=e^x的全导数 高数 求全微分求函数z=arctan(x+y)/(1-xy)的全微分