若 ,则 ,则 ,则
若 ,则
若 ,则一定有特征值().
【答案解析】因为,故,因此一定有特征值为-5,选择A,参见教材P128.(2014年7月真题)
Choose the closest paraphrased version for the sentence or italicized part.
What was a butterfly to do among bulls and bears?()