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 Dec8 comment How to multiply polynominals @AustinMohr While it is not a polynomial, I did mention that "this method will also work with negative and non-integer exponents," as the table method is not restricted to polynomials. Perhaps I should have stated that more clearly in the answer. Dec8 comment How to multiply polynominals @Limitless That only works if the exponents line up nicely like this. Suppose you have something like $(3x^{-3}-x^{\pi/4})(\frac{\pi}{2}x^\sqrt{5}+x^{1/8}-7x^{-4})$. In that case, adding along the diagonals would not work. Dec8 comment How many powers of 2 are easy to double? @coffeemath True, but they do not make it any more difficult. Dec5 comment How to simplify polynomials Did you mean $q(x)=b_nx^n+\color{red}{b}_{n-1}x^{n-1}+\dots+\color{red}{b}_1x+{\color{red}{b}‌​}_{0}$? Dec3 comment Where did these symbols come from? @IydwvCxscujtdo If you are using Windows, you can also use the Character Map (Start > Accessories > System Tools > Character Map), or by typing Win+R and charmap.exe. This will allow you to enter the characters into programs that do not have an "Insert specail character" function. Dec3 comment Where did these symbols come from? @IydwvCxscujtdo You can use $\LaTeX$. For example, $\pi$ will be rendered as $\pi$, and $\Sigma$ will be $\Sigma$. For more information , see MathJax basic tutorial and quick reference. Nov26 comment Notation for n-ary exponentiation Nothing like that seems to work for left-associative tetration, so I have updated the question to include both right- and left-associative tetration operators. The arrow below the $4$ indicates the direction of associativity. Nov26 comment Notation for n-ary exponentiation @rayradjr Since $((({x_1}^{x_2})^{\cdots})^{x_{n-1}})^{x_n} = x_1 \text{^}\Big(\prod\limits_{i=2}^{n} x_i \Big)$, we do not need a symbol for left-associative exponentiation. However, nothing like this would work for right-associative exponentiation, hence the question about notation. Nov26 comment Notation for n-ary exponentiation I think I finally figured out how to get them to look more like accumulation symbols, but they are higher than sum and product symbols. Nov26 comment Notation for n-ary exponentiation @DanBrumleve Interesting thought. I picked $\text{E}$ for exponent and $4$ for tetration, but it wouldn't render them as accumulation symbols (which is why they are inside product symbols). This way $5$ would work for pentation, etc. Nov22 comment Derivatives question involving tangent @RahulNarain Sorry, I was not aware that it would be problematic. I will scale down the editing. Nov22 comment Derivation of the fourier transform of $x^n f(x)$ @GerryMyerson Sorry, I was not aware that it would be problematic. I will scale down the editing. Nov21 comment Operators - sums, products, exponents, etc. @FlybyNight $x$ ^ $(x$ ^ $x)$ Nov21 comment Operators - sums, products, exponents, etc. @Serkan I put the wrong variable; I meant to put $x$.