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Mathematics 18 Online
OpenStudy (anonymous):

Can someone explain how to graph f(x) = log base 2 (x - 3) + 1

OpenStudy (anonymous):

The base 2 is like the exponent but its lower than the log instead of higher

OpenStudy (mathmale):

By far the easiest way would be to graph \[y=\log_{2} x~ first,\] for positive x first.

OpenStudy (mathmale):

Once you have that, we'll merely shift the graph around a bit.

OpenStudy (anonymous):

Can you explain how to do that please?

OpenStudy (anonymous):

I really do not understand logarithms and how to graph them so any help is welcome

OpenStudy (mathmale):

We're discussing the log to the base 2 of x\[y=\log_{2}x \]The easiest way I know of doing this consists in picking values for x that are powers of 2: For example, 2, 2^2, 2^3, 2^4. Please recall that the log and the exponential functions are inverses of each other, so that\[2^{\log_{2}x }=x~and \log_{2} 2^y=y\]

OpenStudy (mathmale):

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