assert_tancond — Computes the condition number of the tan function.
[c,y] = assert_tancond ( x )
a n-by-m matrix of doubles
a n-by-m matrix of doubles, the condition number
a n-by-m, matrix of doubles, the function values
Computes the condition number of the tan function. The tan function has a large condition number if
<latex> \begin{eqnarray} c(x) = \left| \frac{x}{\cos(x) \sin(x)} \right| \end{eqnarray} </latex>