x=a(cost+tsint) y=a(sint—tcost) 求导dy⼀dx

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2025-06-20 13:46:10
推荐回答(1个)
回答1:

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

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