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某公司加薪 ( Delta s ) 影响生产率 ( p )： p(Delta s) = -0.1(Delta s)^2 + 4 Delta s + 50 。(a) 最优加薪？(b) 最大生产率？
某公司加薪 ( Delta s ) 影响生产率 ( p )： p(Delta s) = -0.1(Delta s)^2 + 4 Delta s + 50 。(a) 最优加薪？(b) 最大生产率？
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