!set x=<i>x</i>
<p>
$x is a real number, which can be replaced by an expression, to allow
composite functions.
</p><p>
$table_header
$table_tr<th>Function</th><th>Description</th><th>How to type</th></tr>
$table_tr<td>$m_pi
<tt>pi</tt> or <tt>Pi</tt> or <tt>PI</tt></td></tr>
$table_tr<td><i>e</i></td><td>base of natural logarithmic</td><td>
<tt>e</tt> or <tt>E</tt>
</td></tr>
$table_tr<td
>|$x|</td
><td
>absolute value of
$x</td
><td
><tt
>abs(x
)</td
></tr
>
$table_tr<td>sign($x)</td><td>sign of $x:
<br/> =-1 if $x<0<br/> =0 if $x=0<br/> =1 if $x>0
</td><td><tt>sign(x)</td></tr>
$table_tr<td>
</td><td>square root of $x
</td
><td
><tt
>sqrt(x
)</tt
> or
<tt
>x^
(1/2)</tt
></td
></tr
>
$table_tr<td>?</td><td>closest integer to $x</td><td><tt>rint(x)</tt></td></tr>
$table_tr<td
>?
</td
><td
>largest integer
<=$x</td
><td
><tt
>floor(x
)</tt
></td
></tr
>
$table_tr<td
>?
</td
><td
>smallest integer
>=$x</td
><td
><tt
>ceil(x
)</tt
>
$table_tr
$table_tr<td><i>e<sup>x</sup></td><td>exponential</td><td>
<tt
>exp(x
)</tt
> or
<tt
>e^x
</tt
> or
<tt
>E^x
</tt
></td
></tr
>
$table_tr</td
><td
>ln
($x)</td
><td
>natural logarithmic
</td
><td
><tt
>log(x
)</tt
> or
<tt
>ln
(x
)</tt
></td
></tr
>
$table_tr<td
>sin($x)</td
><td
>trigonometric sine
</td
><td
><tt
>sin(x
)</td
></tr
>
$table_tr<td
>cos($x)</td
><td
>trigonometric cosine
</td
><td
><tt
>cos(x
)</td
></tr
>
$table_tr<td
>tg
($x)</td
><td
>trigonometric tangent
</td
><td
><tt
>tan(x
)</tt
> or
<tt
>tg
(x
)</tt
></td
></tr
>
$table_tr<td>ctg($x)</td><td>trigonometric cotangent</td><td><tt>cotan(x)</tt> or <tt>ctg(x)</tt>
</tt> <br/> or <tt>cot(x)</td></tr>
$table_tr<td
>arcsin
($x)</td
><td
>inverse trigonometric
</td
><td
><tt
>asin(x
)</tt
> or
<tt>arcsin(x)</tt></td></tr>
$table_tr<td
>arccos
($x)</td
><td
>inverse trigonometric
</td
><td
><tt
>acos(x
)</tt
> or
<tt>arccos(x)</tt></td></tr>
$table_tr<td
>arctg
($x)</td
><td
>inverse trigonometric
</td
><td
><tt
>atan(x
)</tt
> or
<tt>arctan(x)</tt> <br/>or <tt>arctg(x)</tt></td></tr>
$table_tr<td
>sh
($x)</td
><td
>parabolic sine
</td
><td
><tt
>sh
(x
)</tt
> or
<tt
>sinh(x
)</tt
></td
></tr
>
$table_tr<td
>ch
($x)</td
><td
>parabolic cosine
</td
><td
><tt
>ch
(x
)</tt
> or
<tt
>cosh(x
)</tt
></td
></tr
>
$table_tr<td
>th
($x)</td
><td
>parabolic tangent
</td
><td
><tt
>th
(x
)</tt
> or
<tt
>tanh(x
)</tt
></td
></tr
>
$table_tr<td
>Argsh
($x)</td
><td
>inverse parabolic
</td
><td
><tt
>asinh(x
)</tt
> or
<tt
>argsh
(x
)</tt
>
<br/>or <tt>Argsh(x)</tt></td></tr>
$table_tr<td
>Argch
($x)</td
><td
>inverse parabolic
</td
><td
><tt
>acosh(x
)</tt
> or
<tt
>argch
(x
)</tt
>
<br/>or <tt>Argch(x)</tt></td></tr>
$table_tr<td
>Argth
($x)</td
><td
>inverse parabolic
</td
><td
><tt
>atanh(x
)</tt
> or
<tt
>argth
(x
)</tt
>
<br/>or <tt>Argth(x)</tt></td></tr>
$table_tr<td
>max(x
,y
)</td
><td
>Bigger among x and y
</td
><td
><tt
>max(x
,y
)</tt
></td
></tr
>
$table_tr<td
>min(x
,y
)</td
><td
>Smaller among x and y
</td
><td
><tt
>min(x
,y
)</td
></tr
>
$table_tr<td
>gcd
(x
,y
)</td
><td
>Greatest Common Divisor
</td
><td
><tt
>max(x
,y
)</td
></tr
>
$table_tr<td
>lcm
(x
,y
)</td
><td
>Least Commun Multiple
</td
><td
><tt
>min(x
,y
)
</table>
!! Add the following:
<ul>
<li
>lg
(x
): log of base
10</li
>
<li>j0(x), j1(x), y0(x), y1(x): Bessel functions</li>
</ul>