∞ is divided into +∞ and -∞, infinity, as the name implies, is infinity!

+∞ is the largest positive number, and there is nothing greater than it; Similarly,-∞ is the smallest negative number, and there is nothing smaller than it.

Strictly speaking,1∞≠ 0 is only infinitely close to 0.

Look at it this way:

⑴+∞

① If +∞ = 1, then1+∞ =1:

② Assuming +∞= 100, then1+∞ = 0.01.

③ Suppose ∞= 10000 again, and at this time1+∞ = 0.0001.

It can be seen that the numerator is 1, and when the denominator is gradually increased, the fractional value gradually decreases and tends to 0.

When the denominator is +∞, the fractional value is infinitely close to 0, but it will never be equal to 0.

⑵-∞

We know that negative numbers can't be the denominator, so there is no "1/-∞ =?" "This kind of problem.

You will understand when you learn it later! Study hard and make progress every day!