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<h1 class="chapter"> 53. impdiff </h1>
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<h2 class="section"> 53.1 Definitions for impdiff </h2>
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<dt><u>Function:</u> <b>implicit_derivative</b><i> (<var>f</var>,<var>indvarlist</var>,<var>orderlist</var>,<var>depvar</var>)</i>
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<dd><p>This subroutine computes implicit derivatives of multivariable functions.
<var>f</var> is an array function, the indexes are the derivative degree in the <var>indvarlist</var> order;
<var>indvarlist</var> is the independent variable list; <var>orderlist</var> is the order desired; and
<var>depvar</var> is the dependent variable.
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<p>To use this function write first <code>load("impdiff")</code>.
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