14 lines
219 B
C
14 lines
219 B
C
#include "solve.h"
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#include <math.h>
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#include <float.h>
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int t3_solve (
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double (*f) (double),
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double x, double h
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) {
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if (h < DBL_EPSILON)
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return DBL_MAX;
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return (f(x + h) - 2 * f(x) + f(x - h)) / (h * h);
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}
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