We notice that the value of E at r naught is negative, as it should be. It's a negative number.

我们主要到在r圈时E的值为负，和它本来的值一致，是一个负数。

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So you'll notice that I'm just going to put in numbers here and then the negative of the number and the numbers are roughly like this: . So the numbers are , , , , and .

你们会注意到我会先写一个正数,然后再写出它的相反数,收益大概如下,分别为,和

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