Abstract
I am beginning systematically in such a way that I will not speak of functions at all, but instead introduce the independent variable x and represent it in the usual manner as a point on the x-axis whose distance fromthe origin is |x| units of measurement and which lies to the right of the origin for positive values of x and to the left of the origin for negative ones. I wish to direct your attention to the precision of the construction of such a point. I note in this respect: If I use an empirical procedure such as drawing, measuring, evaluating by eye, or mental reproduction by spatial perception, the result of the construction only has limited accuracy; I will prove this for measuring, by showing some numerical values.
Abstract
I am beginning systematically in such a way that I will not speak of functions at all, but instead introduce the independent variable x and represent it in the usual manner as a point on the x-axis whose distance fromthe origin is |x| units of measurement and which lies to the right of the origin for positive values of x and to the left of the origin for negative ones. I wish to direct your attention to the precision of the construction of such a point. I note in this respect: If I use an empirical procedure such as drawing, measuring, evaluating by eye, or mental reproduction by spatial perception, the result of the construction only has limited accuracy; I will prove this for measuring, by showing some numerical values.
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© 2016 Springer-Verlag Berlin Heidelberg
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Klein, F. (2016). I. Remarks on the Single Independent Variable x . In: Elementary Mathematics from a Higher Standpoint. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-49439-4_2
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DOI: https://doi.org/10.1007/978-3-662-49439-4_2
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