So you learned about zero as a concept. The first thing people tell you, when they tell you about zero itself, is that division by zero is "undefined".
But why ?
Consider this:
You divide 1 by some small thing, like 0.1. Results in 10. Np.
You divide 1 by some smaller thing, like 0.001. Results in 1000. Np.
But
You divide -1 by some small thing, like 0.1, Result is -10 (wtf?)
You divide -1 by some smaller thing, like 0.001, Result is -1000. (Hell...)
So we can conclude division by zero is undefined (inside the field of real numbers, of course there are some tricks up a complex sleeve... hehe) for the following, simple reasoning:
When dividing anything by "something" small, the result strongly depends on the sign of the numbers put in as a dividend beforehand.
Clearly, something big doesn't equal something exactly as big with a negative sign,
We don't do this kind of bs. As long as we want to stay real.
That is why it is "undefined", in most contexts.
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