Anything to add? All right, go ahead. Julie?
有没有要补充的,好,你来说,朱莉吗?
But then having found one answer, you can add to it anything that gets killed by the act of taking derivatives.
一旦你算出了一个答案,你就可以往式子里加入任何,在求完导后消失的项
If you're a fan of the neutral container theory, you won't have anything extra to add, because life per se is just a zero.
如果你是中性容器理论的粉丝,你就没有任何额外的东西可添加,因为生活本身等于零。
But it has a property that when you add it to anything, you get the same vector.
但它有个性质,就是用它加任何矢量,你得到的都还是原矢量
Everyone knows from calculus that if you're trying to find a function about which you know only the derivative, you can always add a constant to one person's answer without changing anything.
学过微积分的人都知道,如果你想根据已知的导数,求出其原函数,你总是可以给某人的答案,随便加一个常数,且不影响结果
You can add something else to the answer without invalidating it, and that is anything with one power of t in it, because if you take one derivative it'll survive, but if you take two derivatives, it'll get wiped out.
你可以往答案后面加上其它东西,而且不影响结果,也就是任何t的一次项,因为你求一次导数之后它还在,但如果你求两次导数,这一项就不存在了
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