real variable in a sentence

Examples

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