Why log 0 equals infinity?

Answer 1

log10 0 is actually undefined. Think about it like this:

If loba b = y then we know that ay = b

This means that log10 0 = y translates to 10y = 0

But as you know, 10y is always greater than zero.

Therefore 10y = 0 is undefined.

Therefore log10 0 = y is undefined.