MathAction #141 atan(tan(3)) => 3

Topics

iatan in Elemntry:
is?(x, optan) => y
but only if -pi/2 < y < pi/2

fricas

(1) -> atan(tan(3))

$\label{eq1}\arctan \left({\tan \left({3}\right)}\right)$

Type: Expression(Integer)

fricas

atan(tan(3.0))

$\label{eq2}-{0.1415926535 \<u> 8979323846}$

Type: Float

Transferred from savannah

property change --unknown, Thu, 31 Mar 2005 11:58:37 -0600 reply

Severity: normal => serious

Savannah --unknown, Thu, 31 Mar 2005 12:58:45 -0600 reply

bug #10067

We can document this --unknown, Wed, 18 May 2005 13:44:37 -0500 reply

These commands are too dangerous to execute here:

  \begin{axiom}
  atan(tan(3))
  )tr EF_;iatan
  atan(tan(3))
  )tr )off
  \end{axiom}

Try them at home at your own risk...

fricas

atan(cot(4))

$\label{eq3}\arctan \left({\cot \left({4}\right)}\right)$

Type: Expression(Integer)

fricas

numeric %

$\label{eq4}0.7123889803 \<u> 8468985769$

Type: Float

fricas

atan(cot(4.0))

$\label{eq5}0.7123889803 \<u> 8468985769$

Type: Float

What about (temporary) document the domain of each function, for this package ?

... --wyscc, Sun, 17 Jul 2005 14:17:48 -0500 reply