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Y(t)=3t^2-3t X(t)=4t^2-6t^3+5t 求Y(x)=?
人气:408 ℃ 时间:2019-10-19 23:35:39
解答
Y(t)=3t(t-1)
X(t)=-t(6t^2-4t-5)=
Y(x)=-3t(6t^2-4t-5)(4t^2-6t^3+5t-1)
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