y=(x+1)^2/3(x-5)^2的极值,
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y=(x+1)^2/3(x-5)^2的极值,
y=(x+1)^2/3(x-5)^2的极值,
y=(x+1)^2/3(x-5)^2的极值,
y'=(((x+1)^2)'*3(x-5)^2-(x+1)^2*(3(x-5)^2)')/((3(x-5)^2)^2)=(-4(x+1))/((x-5)^3)
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