What is ln0? What is ln0? @Mathematics

Question

anonymous · Answer

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

anonymous · Answer

So I agree with moneybird^

jim_thompson5910 · Answer

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

turingtest · Answer

yeah or $$-\infty$$

jim_thompson5910 · Answer

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

turingtest · Answer

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

anonymous · Answer

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

anonymous · Answer

depends on the level of your class