设y=sin2x/(1+x^2),求dy/dx,

设y=sin2x/(1+x^2),求dy/dx, 设y=sin2x/(1+x^2),求dy/dx, 设y=e∧1/x+sin2x,求dy 设y=x分子sin2x.求dx分子dy. 设y=e的x分之1次方+sin2x,求dy 设y=e的x分之1次方+sin2x,求dy, 设y＝sin2x＋√〔1+2x〕+e³,求dy/dx y=e^x/x^2+sin2x 求dy/dx y=x^2(√x-sin2x),求dy y=3x+sin2x求dy, 设y＝sin2x/x的平方 求dy 设函数f (x)在[0,1]上可导,且y=f (x)sin2x+f (x)cosx2,求 dy 第一题：设xy+ylnx=Sin2x 求（dy）/（dx）第二题：设y=（1+x）^Sinx 求（dy）/（dx) 设函数f(x)在[0,1]上可导,且y=f(x)sin2x+f(x)cosx^2,求dy/dx 设y=(sin2x)^x,求dy/dx最好过程能具体点啦 y=sin2x,求dy 设y=√(x^2-1)求dy/dx 设y=cos^2(x+1),求dy