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L

Learning Formula

$$\frac{success}{problem}=~\unitlength{.6}~\picture(100){~~(50,50){\circle(99)}~ ~(20,55;50,0;2){+1$\hat\bullet}~~(50,40){\bullet}~~(50,35){\circle(50,25;34)}~ ~(50,35){\circle(50,45;34)}}$$

T

TeX

$$TeX$$  notation allows for the expression of ASCII characters to generate formatted graphics output

A

algebraic expression

using @@@ x=y^2@@@ to create @@ x=y^2@@

array

$$$\begin{array}{|ccc|}a_1&a_2&a_3\\ b_1&b_2&b_3\\ c_1&c_2&c_3\end{array}$$$ is $$\begin{array}{|ccc|}a_1&a_2&a_3\\ b_1&b_2&b_3\\ c_1&c_2&c_3\end{array}$$

B

big sum

$$$\bigsum_{n+2}^x$$$   is   $$\bigsum_{n+2}^x$$

D

delta

$$$\delta$$$ is $$\delta $$

division

@@@1/2@@@   is @@1/2@@

E

equals

@@@x=2@@@   is @@x=2@@

F

formula box

$$$\fbox{x=\frac12}$$$  is $$\fbox{x=\frac12}$$

fraction

$$$\(\frac1{1-x}\)$$$  is $$\(\frac1{1-x}\)$$

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