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Mathematics 15 Online
OpenStudy (anonymous):

explain the limitations on the base of an exponential function.

OpenStudy (lgbasallote):

limitations

OpenStudy (lgbasallote):

?

OpenStudy (lgbasallote):

i know only one \[\LARGE a^0 \; \; \text{and}\; \; a \ne 0\]

OpenStudy (lgbasallote):

because \[\Large 0^0 \longrightarrow\text{indeterminate}\]

OpenStudy (anonymous):

Also the base cannot be 1 correct?

OpenStudy (lgbasallote):

it can be 1

OpenStudy (lgbasallote):

1 raised to 0 is 1

OpenStudy (lgbasallote):

the base cannot be negative though

OpenStudy (anonymous):

No, because then their is no graph. The graph becomes the linear function f(x) = 1 since 1 raised to any power equals 1. Since it is a linear function, it cannot also be an exponential function. Consequently exponential functions cannot have a base of 1.

OpenStudy (anonymous):

It should be greater than 0. All other bases result in branch cuts in the complex plane.

OpenStudy (lgbasallote):

\[\LARGE a^x \; \; \text{and} \; \; a \ge 0\]

OpenStudy (lgbasallote):

you raise a good point

OpenStudy (lgbasallote):

i think i do remember something like that before

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