Merge branch 'master' of https://github.com/csc-training/hpc-python

Author: jussienko

numpy/polynomials/README.md

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+## Polynomials
+
+Fit a second order polynomial to the data of previous exercises by using
+`numpy.polyfit()`. Construct the values of the polynomial in the interval
+[-6,6] with `numpy.polyval()`. You can use matplotlib for plotting both the
+original points and the fitted polynomial.