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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" type="guide" id="function" lang="nl">

    <info>
        <link type="guide" xref="index#equation"/>
    <credit type="translator copyright"><name>Nathan Follens</name><email>nfollens@gnome.org</email><years>2022, 2025.</years></credit></info>

	<title>Functies</title>
    
    <p>Functies kunnen gebruikt worden door de naam van de functie in te voeren, gevolgd door de parameters voor de functie. <app>Rekenmachine</app> biedt ook ondersteuning voor functies die u zelf definieert. Als de parameter geen getal of <link xref="variable">enkele variabele</link> is, scheid dan alle parameters met een puntkomma, en plaats haakjes rond de lijst met parameters.</p>
    <example>
    <p its:locNote="Translators: Do not translate the word 'sin'!">sin 30</p>
    <p its:locNote="Translators: Do not translate the word 'abs'!">abs (5−9)</p>
    <p its:locNote="Translators: Do not translate the word 'fun'!">fun (9;10)</p>
    </example>
    <p>
    To add a new function type the function in the format as given below. A function name and arguments must only contain upper or lower case characters, or underscores. The part after @ is the function description which is optional.
    </p>
    <example>
    <p>EenvoudigeIntrest (principal; rate; time) = principal * rate * time @ Eenvoudige intrestformule</p>
    </example>
    <p>Functies kunnen ook toegevoegd en ingevoegd worden met de knop f(x).</p>
    <example>
    <p>Klik op f(x). Typ de functienaam in het vak, kies het aantal argumenten en klik op de plusknop ernaast. Typ op het rekenmachinescherm de functie-expressie en druk op <key>Enter</key>.</p>
    </example>
    <example>
    <p>Klik op f(x). Kies de functie en klik erop.</p>
    </example>
    <p>De volgende functies zijn gedefinieerd.</p>
    <table>
    <tr>
    <td colspan="2"><p>Goniometrie</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sin</p></td>
    <td><p><link xref="trigonometry">Sinus</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cos</p></td>
    <td><p><link xref="trigonometry">Cosinus</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tan</p></td>
    <td><p><link xref="trigonometry">Tangens</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sin⁻¹ / asin</p></td>
    <td><p><link xref="trigonometry">Inverse Sine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cos⁻¹ / acos</p></td>
    <td><p><link xref="trigonometry">Inverse Cosine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tan⁻¹ / atan</p></td>
    <td><p><link xref="trigonometry">Inverse Tangent</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sinh</p></td>
    <td><p><link xref="trigonometry">Hyperbolische sinus</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cosh</p></td>
    <td><p><link xref="trigonometry">Hyperbolische cosinus</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tanh</p></td>
    <td><p><link xref="trigonometry">Hyperbolische tangens</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sinh⁻¹ / asinh</p></td>
    <td><p><link xref="trigonometry">Inverse Hyperbolic Sine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cosh⁻¹ / acosh</p></td>
    <td><p><link xref="trigonometry">Inverse Hyperbolic Cosine</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">tanh⁻¹ / atanh</p></td>
    <td><p><link xref="trigonometry">Inverse Hyperbolic Tangent</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Complex</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">conj</p></td>
    <td><p><link xref="complex">Complex Conjugate</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">arg</p></td>
    <td><p><link xref="complex">Complex Argument</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">re</p></td>
    <td><p><link xref="complex">Real Component</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">im</p></td>
    <td><p><link xref="complex">Imaginary Component</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Programmeren</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">twos</p></td>
    <td><p><link xref="mode-programming">Two’s Complement</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">bswap</p></td>
    <td><p><link xref="mode-programming">Swap Endianness</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">mod</p></td>
    <td><p><link xref="modulus">Modulus Divide</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">modexp</p></td>
    <td><p><link xref="modulus">Modular Exponentiation</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Rounding</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">round</p></td>
    <td><p><link xref="rounding">Round</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">floor</p></td>
    <td><p><link xref="rounding">Floor</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">ceil</p></td>
    <td><p><link xref="rounding">Ceiling</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">int</p></td>
    <td><p><link xref="rounding">Integer Component</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">frac</p></td>
    <td><p><link xref="rounding">Fractional Component</link></p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Statistics</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sum</p></td>
    <td><p>Sum</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sumsq</p></td>
    <td><p>Sum of Squares</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">average</p></td>
    <td><p>Average</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">median</p></td>
    <td><p>Median</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">min</p></td>
    <td><p>Minimum Value</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">max</p></td>
    <td><p>Maximum Value</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">stdev</p></td>
    <td><p>Sample Standard Deviation</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">stdevp</p></td>
    <td><p>Population Standard Deviation</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">var</p></td>
    <td><p>Sample Variance</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">varp</p></td>
    <td><p>Population Variance</p></td>
    </tr>
    <tr>
    <td colspan="2"><p>Sundry</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">log</p></td>
    <td><p><link xref="logarithm">Logaritme</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">ln</p></td>
    <td><p><link xref="logarithm">Natuurlijk logaritme</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sqrt</p></td>
    <td><p><link xref="power">Vierkantswortel</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">abs</p></td>
    <td><p><link xref="absolute">Absolute waarde</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">sgn</p></td>
    <td><p><link xref="absolute">Signum</link></p></td>
    </tr>
    <tr>
    <td><p its:translate="no">ncr</p></td>
    <td><p>Combination</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">npr</p></td>
    <td><p>Permutation</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">gcd</p></td>
    <td><p>Greatest Common Divisor</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">lcm</p></td>
    <td><p>Least Common Multiple</p></td>
    </tr>
    <tr>
    <td><p its:translate="no">cmp</p></td>
    <td><p>Comparison (Kronecker Delta)</p></td>
    </tr>
    </table>
</page>
