This is a
graph of the
equation y = tan x.
Dotted lines indicate
discontinuities.
+-------------------------------------------------------------------------------------------------+
| # . | # . | 2.5
| # . | # . |
| ## . | ## . |
| # . | # . | 2.0
| ## . | ## . |
| # . | # . |
| # . | # . | 1.5
| # . | # . |
| # . | # . |
| # . | # . | 1.0
| ## . | ## . |
| # . | # . |
| ## . | ## . | 0.5
| ### . | ### . |
| ## . | ## . |
|##---------------------------------------------###---------------------------------------------##| 0.0
| . ## | . ## |
| . ### | . ### |
| . ## | . ## | -0.5
| . # | . # |
| . ## | . ## |
| . # | . # | -1.0
| . # | . # |
| . # | . # |
| . # | . # | -1.5
| . # | . # |
| . ## | . ## |
| . # | . # | -2.0
| . ## | . ## |
| . # | . # |
| . # | . # | -2.5
+-------------------------------------------------------------------------------------------------+
A A A A A
-π -π/2 0 π/2 π