Comparative analysis of flow real functions of a real variable with and without program support

The function is one of the fundamental concepts in mathematics. It occurs in various areas of mathematics that depends on what are the domain and kodomen. U calculus, but also in other fields, the most commonly used functions of a real variable. Under the function of a real variable we mean a function ƒ: X→Y, where X c R, Y = R. This paper presents a comparative view of the analysis and testing of the flow function of the form y = ƒ (x) and the graph with the help of MS Excel, and flow analysis of real functions without using the software. For examples were taken a few real functions were evaluated for their flow. The results of the computation are done without software support and with the help of Microsoft Excel and Power Toy Calculator to graph functions. The results are presented and from it is possible to see differences in the results obtained.