在重构限制性信念时，哪种方法被提到作为有效工具？

设X与Y为独立随机变量，D(X)=2，D(Y)=3，则D(X + Y)等于：

在NLP的视角下，当个体因情绪困扰而难以形成积极状态时，第二位置的价值在于如何辅助其达成目标？

计算不定积分 ∫1/(1+x²)dx，正确结果是？

A software engineer is reviewing code. They come across the following statement in a coding comment: 'While the previous method was computationally efficient, it lacked the necessary flexibility for future updates.' Which of the following best captures the engineers implied prioritization?