draw exp function

I'm not sure if you want me to draw a graph of the exponential function or to write the mathematical expression for it, so I will provide both:

Graph of the exponential function:

       ^
       |
       |
       |
       |
       |                                                  .
       |                                             .
       |                                        .
       |                                   .
       |                              .
       |                         .
       |                    .
       |               .
       |          .
       |     .
_______|___________________________________________________________>
       |      |      |      |      |      |      |      |      |
      -3     -2     -1      0      1      2      3      4      5

Mathematical expression for the exponential function:

f(x) = e^x

where e is the mathematical constant approximately equal to 2.71828.