sin(x +y^2) +3xy=1求微分求详解!

sin(x +y^2) +3xy=1求微分求详解! Xy-sin(x+y)=1 求Y的导数 sin(xy)=x+y,求dy sin(x*x+y)=xy 求y'x Z=x*sin xy+e^x+y或设y=(x)是由方程xy+sin x+sin y=1确定,求y” sin(xy)+ln(y-x)=x,求y` sin(xy)+ln(y-x)=x,求y sin(xy)=x 求dx/dysec(xy)-y ]/x 还是 x/[sec(xy)-y] （1）y-sin（Inx）求y （2）（e^x+y）-xy=0求dy 求极限((1-根号下x^2+1)/x^3y^2)sin(xy),当x,y趋于0时 若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思，是3x-2xy-3y/x-2xy-y Sin(xy)=x+e^y求y'= sin（x+y）+e^xy=4 求y' 已知3/(x-y)=1/xy 求(-x-2xy+y)/ (2x+3xy-2y) sin(xy)=ln(x+y)/y+1,求y'(0)要过程 y=y(x)由方程 [e^(x+y)]+sin(xy)=1确定,求y'(x)及y'(0) x→2,y→0,求lim sin[(8 -x)y]/xy=多少呀? 若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值