Question

What is ln0? What is ln0? @Mathematics

Answer 1

undefined since
For all real number of x,
10^x can not be = 0

Answer 2

So I agree with moneybird^

Answer 3

yes, ln(0) is undefined since ln(0) = y implies e^y = 0, but there are no values of y which satisfy this equation

Answer 4

yeah or \[-\infty\]

Answer 5

in a calculus context, you can say that

\[\Large \lim_{x\to0+}\left(\ln(x)\right)=-\infty\]

but not sure the book is looking for that

Answer 6

Sure, sometimes they want "undefined" and sometimes they want "infinity".
It can be hard to tell what they are looking for without more context.

Answer 7

Before calculus you are supposed to say it's undefined as you don't know what values it is going to. After learning limits, most teachers want you to say Infinity

Answer 8

depends on the level of your class