y=arctan(1-x/1+x),求dy

y=arctan(1-x/1+x),求dy y=arctan(x+1)^1/2,求dy=? 函数y=arctan(1+x^2)求dy/dx 设y=arctan根号(x^2-1)-lnx/根号(x^2-1)求dy 已知函数y(x)由方程arctan y/x=1/2ln(x^2+ y^2)确定,求dy. 高数题求微分 设y=2^arctan（1/x）-sin3 ,求dy 设函数y=arctan(1+x^2),求dy/dx. 1,y=e^tanxcos^3x,求dy 2,函数y=y（x）由方程e^(x+y)+arctan(xy)=0确定,求dy 设y=arctan(a/x)+1/2[ln(x-a)-ln(x+a)],求dy|x=0 计算I=∮1/x*arctan(y/x)dx+2/y*arctan(x/y)dy,L为圆周x^2+y^2=1,x^2+y y=arctan(x/3)+ln(1-x),函数的微分dy=? 设x=t+arctan t+1,y=t的立方+6t－2,求dy／dx