(x^2+y^2)e^-arctan(y/x)对x和y求偏导,再求先x之后y的偏导

求y=e^(arctan(x^1/2))的导数 (x^2+y^2)e^-arctan(y/x)对x和y求偏导,再求先x之后y的偏导 y=2x*arctan(y/x),求y‘’ y=arctan（x/2）求导? 求导 y=(arctan x)^2 y=arctan（x^2+1） 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 已知f(x,y)=x^2arctan(y/x)-y^2arctan(x/y)求它的混合二阶偏导 arctan(x,arctan(x,y)是不是等于arctan(x/y)? 求这些导数 y=2^sinx y=e^arctan√z y=e^-x^2 y=sec^x 设函数z=(x^2+y^2)*{e^-arctan(x/y)},求dz与a^2z/axay y=arctan(e^x)求y的导数 1）求函数y=e^arctan√x的导数 2）y=ln cos e^x 求y' 求导y=arctan[2x/(1-x^2)] z=x^2*arctan(2y/x)求dz 急等 求导 Y=ARCTAN x/1+x^2 请求下列函数的导数1.y=( arctan(x/2) )^22.y=( e^t-e^(-t) )/( e^t+e^(-t) ) 曲线y=e^(x^(-2))arctan((x+1)/(x-1))的水平和垂直渐近线分别是?