Logarithmic function transformations

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The standard log function form is $a \log[k(x-d)] + c$

Where

$a$ vertically stretches or compresses

$k$ horizontally stretches or compresses

$d$ translates left or right

$c$ translates up or down

If we have $2 \log(2x)$ does this have a vertical translation when rewriting to $\log 4 + \log x$?? And why? Standard form dictates this has no vertical or horizontal shifts?

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When dealing with logarithms, vertical shifts, and horizontal stretches/compressions are considered to be one and the same.

$$\log(a\cdot x)=\log(x)+c$$

We don't say it doesn't have a vertical shift, it does, but it also has a horizontal stretch/compression that is exactly related to the vertical shifting.

To understand why this is so, return to the definition of the logarithm:

$$\log_{10}(x)=y$$

$$x=10^y$$

Now, try performing a horizontal stretch/compression by a multiple of $10$.

$$10x=10^y$$

$$x=\frac{10^y}{10^1}=10^{y-1}$$

Convert this back to logarithmic form:

$$y-1=\log_{10}(x)$$

$$y=\log_{10}(x)+1$$

In the beginning, we had $10x=10^y$, which in logarithmic form is $y=\log_{10}(10x)$:

$$y=\log_{10}(x)+1=\log_{10}(10x)$$

So that's the basic reason.

Vertical stretches/compressions are not synonymous:

$$a\log(x)=\log(x^a)$$

That is neither a shift nor a stretch, as you can obviously tell.