题目内容

将椭圆按φ:  ,变换后得到圆,则(  )
A.λ="3," μ=4 B.λ="3," μ=2C.λ="1," μ=D.λ="1," μ=
D

试题分析:由参数方程可得,代入到椭圆方程中,可得,为,则,则λ=1,μ=
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