Computing machine with an inequality computation function

摘要

When an arithmetic operation is performed on an inequality, a solution notation pattern composed of a combination of a symbol and an inequality sign symbol is determined on the basis of an expression, a solution, and an inequality sign symbol. With Line I/O being set as the calculation result display mode, the solution notation pattern data, for example, [A≦X≦B], is displayed in the upper part of a display unit. The values of the solutions [X1] [X2] corresponding to the symbols [A] [B] shown in the pattern data are displayed as [A=X1] [B=X2] in the lower part of the display unit. This makes it possible to display the solution of the inequality in an easy-to-understand manner.

主权项

1. A computing machine comprising:
inequality input means for inputting an inequality; inequality computation means for calculating a solution to anthe inequality input by the inequality input means; solution notation pattern determination means which, on the basis of the solution to the inequality calculated by the inequality computation means and an inequality sign symbol of the inequality, determines a solution notation pattern composed of a combination ofincluding a symbol and an inequality sign symbol; and solution display means which causesdisplays on a display unit to display not onlyboth the solution notation pattern determined by the solution notation pattern determination means but also theand a value of the solution of the inequality calculated by the inequality computation means corresponding to the symbol included in the displayed solution notation pattern.