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Beer w/Straw
6th April 2009 - 04:06 PM
I\m reviewing for my exam and the basic plot of y=e^x has a range written as y>=o but since e is constant can y ever really equal zero?
rpenner
6th April 2009 - 06:15 PM
"Since e is constant" has nothing to do with it.

"Since e is non-zero" has everything to do with it. -- Unless you are working with the extended number line, where e^(−∞) = 0, but that can never be true if we are just talking about the real or complex numbers.
Grasshopper
21st April 2009 - 05:23 AM
QUOTE (rpenner+Apr 6 2009, 06:15 PM)
"Since e is constant" has nothing to do with it.

"Since e is non-zero" has everything to do with it. -- Unless you are working with the extended number line, where e^(−∞) = 0, but that can never be true if we are just talking about the real or complex numbers.

So are you saying that unless x → -∞, then y can never = 0? (or the limit, rather)

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