y=cos(2x+3)+e^(-5x)求导 答案是否-2sin(2x+3-5e^(-5x)?求y'(X)及dy

y=cos^3(2x)+e^x求导数 y=e^-x cos 3x,求dy. 设y=cos(x^2+e^x)求dy y=cos(2x+3)+e^(-5x)求导 答案是否-2sin(2x+3-5e^(-5x)?求y'(X)及dy 设y=e^cos^2*1/x,求dy y=cos^3(2x)+e^x求导 求微分 y=ln(1-x^2) y=e^-x +cos(3+x) y=sin2x y(x)=c1*e^3x*cos(2x)+c2*e^3x*sin(2x)c1 c2 都是常数求 y'和y'' y=cos^2(e^x),求dy.dy=dcos^2(e^x) 1=2cos(e^x)*dcos(e^x) 2=-2cos(e^x)sin(e^x)de^x 3=-(sin2e^x)e^x dx 4第二步为什么会这样变化,怎么多出了个2cos(e^x)? 求函数y=ln^2(1-x)与y=cos(3-x)e^-x的微分 求导数 y=e^x 乘cos^x 设y=e^(-x) cos 1/x,求dy. 求下列函数导数y=cos（π/3-x）y=e^3xy=In(3-x)y=cos^3(1-2x) ) y=cos(x-y)求一阶导数y=cos(x-y)求三阶导数y=e^-xy=(e^2x)(sinx) y =(cos^2) x - sin (3^x),求y' 计算y = e–2 x cos x ,求y ′ = 设函数y=e^2x+cos x求倒数y'与微分dy Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y)