| 11. | This rapidity parameter corresponds to the real variable in a one-parameter group of hyperbolic versors.
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| 12. | However, not all real variable taking real values.
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| 13. | These are also functions of real variables, such as frequency or time, as well as temperature.
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| 14. | Consequently, " f " is not functions of a complex variable rather than of a real variable.
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| 15. | The real variable is going to be how many times you eat and how much you eat,
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| 16. | The modern ?-? definition of the limit of a function of a real variable is given below.
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| 17. | In this case, the function " f " has to be a function of one real variable.
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| 18. | For a real-valued function of three or more real variables, this expression extends easily using appropriate rotation matrices.
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| 19. | An "'acnode "'is an isolated point in the solution set of a polynomial equation in two real variables.
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| 20. | Unlike functions of a real variable, holomorphic functions are sufficiently rigid that their isolated singularities can be completely classified.
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