| 31. | In some cases the relation between two real variables cannot be written in the form y = f ( x ).
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| 32. | The domain of a function of several real variables is a subset of that is sometimes, but not always, explicitly defined.
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| 33. | The "'implicit function theorem "'of more than two real variables deals with the continuity and differentiability of the function, as follows.
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| 34. | When and are real variables, the derivative of at is the slope of the tangent line to the graph of at.
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| 35. | "' Chebfun "'is a free / open-source software system written in MATLAB for numerical computation with functions of a real variable.
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| 36. | A linear program in real variables is said to be "'integral "'if it has at least one optimal solution which is integral.
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| 37. | In complex analysis, the integrand is a complex-valued function of a complex variable instead of a real function of a real variable.
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| 38. | The KdV equation is a nonlinear, dispersive partial differential equation for a real variables, space " x " and time " t ":
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| 39. | If you understand it for functions of one real variable, you got it in the general case of contractions on complete metric spaces.
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| 40. | The domain of a function of several real variables is a subset of ! that is sometimes, but not always, explicitly defined.
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