x=a(cost+tsint) y=a(sint—tcost) 求导dy/dx

问题描述:

x=a(cost+tsint) y=a(sint—tcost) 求导dy/dx
哪个大神教教我呀

解析
x=acost+atsint
y=asint-atcost
dx=-asint+asint+atcost
dy=acost-acost+atsint
∴dy/dx=(acost-acost+asint)/(atcost)
=asint/atcost
=tan/t
果断打字,