Mathematical Functions with Legend
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|                                                                                |
| 1.0                    =                                                       |
|                 ======= ========                                               |
| %%%           ==                =====                    -- $e^{-x/2}cos(x)$   |
| 0.8%%%      ==                       ====                -- $xe^{-x/3}$        |
| *-    %%  ==                             ====            -- $sin(x)/x$         |
|   -    %%==                                  ===         -- $x^{2}e^{-x}$      |
|    -    =%%                                     ====                           |
| 0.6-   =  %%                                        ====                       |
|     - =     %                                           ====                   |
|      =       %%###                                         =====               |
|     = -   ####%   ####                                          =====          |
| 0.4=     ##    %%     ###                                            =====     |
|    =   ##        %       ####                                            ===== |
|       ##         %%         ####                                               |
| 0.2  #  -          %            ####                                           |
|  = ##    -          %%              #####                                      |
| =  #      -          %                   ######       %%%%%%%%%%%%%            |
|  ##        -          %%              ---------###%%%%#########    %%%%%       |
| 0.0         -           %         -----        %%%     -------##########%%%%%# |
|              --          %%%  ----          %%%                              % |
|               --           -%%          %%%%                                   |
| -0.2 * * * * * *-*-*-*-*-** * *%*%*%*%*%* * * * * ** * * * * * * * * * * * **  |
|0              2               4               6                8               |
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                                       x
f(x)