And you can use mnemonics to try to keep these straight I see the t as sort of a plus sign.

你可以使用记忆术来记清它们，我将T看成是加号。

youdao

Because what we're saying here is we want a function of a plus b, which is equal to the same sort of function of a times the same sort of function of b.

因为我们这里需要的，是a +b的函数，这个数值等于a的函数，乘以b的函数。

youdao

Because what we're saying here is we want a function of a plus b, which is equal to the same sort of function of a times the same sort of function of b.

因为我们这里需要的，是a +b的函数，这个数值等于a的函数，乘以b的函数。

youdao