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Mathematics 20 Online
OpenStudy (unklerhaukus):

\[100^x=0^+\]

ganeshie8 (ganeshie8):

\[100^x=0^+ ~~\iff~~x=\log_{100}0^{+}=-\infty\]

OpenStudy (unklerhaukus):

\[x = \lim_{y\to-\infty}y\]

ganeshie8 (ganeshie8):

i think we can avoid the limits by moving to extended reals

OpenStudy (unklerhaukus):

but \[100^x=0 \quad\implies\quad x=-\infty\]

ganeshie8 (ganeshie8):

Nope, I see what you did there. identically equal to 0 and tens to 0 from positive side are two different things

ganeshie8 (ganeshie8):

*tends

OpenStudy (unklerhaukus):

right

ganeshie8 (ganeshie8):

At any rate below should be fine \[100^x= 0^{+}\quad\implies\quad x=-\infty\] if \(0^{+}\) is defined as getting close to 0 from right hand side, but honestly i never worked wid these operators... so i think "+ on top right corner" operation needs to be defined first.

OpenStudy (unklerhaukus):

\[100^x= 0^{+}\quad\implies\quad x=-\infty^+\]

ganeshie8 (ganeshie8):

what does that even mean xD

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