| 摘要 |
PROBLEM TO BE SOLVED: To provide an expression processor with which the expressions of various forms corresponding to the description formats of textbook or technological book can be inputted and further, various kinds of arithmetic processing such as graph display can be executed by performing prescribed internal processing to the inputted expression and to provide a storage medium. SOLUTION: A formula input picture composed of a double side connection symbol display part 4c, left side input area 4d and right side input area 4e capable of inputting arbitrary formulas is displayed in a display picture 4a and when formulas are completely inputted to both sides, after graph display initializing processing is performed while considering the display ability of the display part 4, the value of a correspondent variable (y) is calculated by substituting the value of a variable (x) successively to a functional expression established by inputted formulas and by successively displaying coordinates satisfying the functional expression with dots, the graph display is performed based on the inputted formulas.
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