设y=[e^x+e^(-x)]^2,求dy

设y=[e^x+e^(-x)]^2,求dy 设y=x^2*e^sinx,求dy. 设y=x*e^y,求dy=? 设y=e-5x-tanx,求dy 设y=e^sinx+3^x 求dy 急! 设y=e^sinx +3^x,求dy 设y=ln(1+e^-x)求dy 设y=e∧1/x+sin2x,求dy 设x=e^-t y=e^-2t 求dy/dx 设函数y=e^2x+cos x求倒数y'与微分dy 设y=f(sinx)+e^x^2,f'(x)存在,求y'及dy 设siny+e^3x-2x^3y^2=0,求dy/dx