{x=e右上角tcost,则 dy/dx = {y=e右上角tsint,
设(X=TCOST,Y=TSINT,求DY/DX
x=a(cost+tsint) y=a(sint—tcost) 求导dy/dx
L为参数方程x=cost+tsint y=sint-tcost 求曲线积分x+e^xdy+(y+ye^x)dx t为0到
..参数方程求导.为什么dx/dt=1-sint-tcost?为什么dy/dt=cost-tsint?这个dy/dx=(
求微分的题目一道,x=e^(-t)sint,y=e^tcost,求 d^2y/dx^2
[e^(x+y)-e^x]dx+[e^(x+y)-e^y]dy=0求通解
设x=cost y=sint-tcost 求dy/dx
y=e^x-ln3 则 dy/dx等于什么,
e^x+e^y=y 确定函数y=f(x) 则dy/dx
dy/dx,y=(1+x+x^2)e^x
dy/dx+(e^((y^2)+x))/y=0
y=e^(x^x) dy/dx=?