I started wondering about this the other day. Since the following have their own alternate representations. $\begin{align*} \displaystyle\large x+x=2x & \ \frac{x}{x}=1 & xx=x^2\end{align*}$
Can $x^x$ be represented in some other way? Thanks.
I started wondering about this the other day. Since the following have their own alternate representations. $\begin{align*} \displaystyle\large x+x=2x & \ \frac{x}{x}=1 & xx=x^2\end{align*}$
Can $x^x$ be represented in some other way? Thanks.
Yes, it's called tetration. We can write $x^x$ as $^{2}x$.
There's actually a whole chain of these iterated operators, such as the (rather) famous Knuth up-arrow notation. The page I linked to has quite a few examples if you are interested.
$e^{x\log(x)}$
This is a nice way to represent it if you want to differentiate it, since you can then just apply the standard differentiation rules.
Something like $x^{x^x}$ will be represented as $e^{e^{x\log(x)}\log(x)}$