Whether it is meaningful or not depends on which learning stage it belongs to. It is meaningless in elementary mathematics, such as junior high school and senior high school. At the advanced level and above, we can't simply say whether it makes sense, such as adopting extreme thinking and approaching zero.

The closer we get to zero, the closer we get to 1, but obviously (-0. 1) (-0. 1) is meaningless, because there are no even roots in the real number field.

In fact, we can get: lim (x → 0+) x x = 1, in other words, if we approach from a positive number, 0 0 converges to1; It is meaningless to approximate from negative numbers.

0-power correlation extension:

The study of quantity begins with numbers, which are familiar natural numbers and integers as well as rational numbers and irrational numbers described in arithmetic.

Specifically, for the need of counting, human beings abstract natural numbers from real things, which is the starting point of all "numbers" in mathematics. Natural numbers are not closed to subtraction, so in order to close subtraction, the number system is extended to integers; In order not to close division, but to close division, the number system is extended to rational numbers.

For the root operation is not closed, the number system is extended to algebraic number (in fact, algebraic number is a broader concept), on the other hand, for the limit operation is not closed, the number system is extended to real number.