Abstract
In this paper a numerical application of the derivative is performed, the algorithm based on the least squares method program is presented. The program is used for calculation of experimental melting temperature of an aluminum alloy, of about 660 °C, giving a relative error of 0.08%. This derivative is also used to evaluate its effectiveness in periodic and piecewise continuous functions, a correlation coefficient of 1.0 is obtained in all results. The work presented here is focused to undergraduate students in differential calculus and researchers that require the derivative with numerical analysis.
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