26:23 (2X)
老师,这里我再多问一句,对于Δi/Δy的文字表述,是否需要区分分子和分母,比如考试的时候如果说
“correlation of changes in yields of assets and liabilities"
“correlation of changes in yields of assets to liabilities"
“correlation of changes in yields of liabilities and assets"
“correlation of changes in yields of liabilities to assets"
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我是要根据具体描述来判断是Δi/Δy还是Δy/Δi吗?
还是说,不管怎样表述,这个地方全部默认题目直接给的就是Δi/Δy?