设z=y+yt,而y=e^x,t=sinx,求dz/dx

设z=y+yt,而y=e^x,t=sinx,求dz/dx 设z=xy+yt,y=e^x,t=sinx,则dz/dx= 设 z=xy+yt 而 y=2^x,t=sinx 求全导数dz/dt2x(2xln2+sinxln2+cosx+1) 设z=y/x,而x=e^t,y=1-e^(-2t),求dz/dt?$(acontent) 设z=x^2y,而x=cot t,y=sin t,求dz/dt 设z=e^(2x-y),而x=t,y=t^2,求dz/dt . 高数!设z=e^(x-2y),而x=sint,y=t^3,求dz/dt 设z=e^(x-2y),而x=sint,y=t^3,求dz/dt 设Z=sin(x+y)e的f（xy)次方,求əz/əx,əz/əy 求全微分z=e^[sin(x+y)]*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” 设函数f(u)具有二阶导数,而z=f((e^x)*sin(y))满足方程d^2(z)/d^2(x^2)+d^2(z)/d(y^2)=e^(2*x)*z,求f(u). 设x=e'sin t,y=e'cos t,求dy/dx. 设z=xy+sint,而x=e^t,y=cost,求导数dz/dt求详细解答 设z=y/x,x=e^t,y=e^2t,求dz/dt 设z=f(x^2-y^2,e^（xy)),求偏导z/x,偏导z/y 求多元函数的微积分,z=x^y,而x=e^t,y=t,求dz/dt 设二元函数z=sin(x-y),求αz/αy,αy/αz,dz