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<h2 class="chapter">27 Numerical Differentiation</h2>
<p><a name="index-differentiation-of-functions_002c-numeric-2119"></a><a name="index-functions_002c-numerical-differentiation-2120"></a><a name="index-derivatives_002c-calculating-numerically-2121"></a><a name="index-numerical-derivatives-2122"></a><a name="index-slope_002c-see-numerical-derivative-2123"></a>
The functions described in this chapter compute numerical derivatives by
finite differencing. An adaptive algorithm is used to find the best
choice of finite difference and to estimate the error in the derivative.
These functions are declared in the header file <samp><span class="file">gsl_deriv.h</span></samp>.
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