...2 之系数，故x 1 可使P 值增加的 速度较快，故选择x 1 为新的基础变数之一，此新的 基础变数称之为代入变数（Entering Variable ）。
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进基变量 ( Entering Variable ):选一个 λk 0 的非基变量 xk 换成基变量,称为进基变量。 26.
入基变量
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Mr Brown has told the BBC he would be prepared to oppose the government on the issue of variable fees in his first vote against the Labour whip since entering Parliament.
BBC: Students have continually opposed the plans
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