Formula display device, formula display program, and formula display method

摘要

PROBLEM TO BE SOLVED: To easily confirm whether a value substituted for a variables is correct or not and correct it after a numerical expression including a substitution expression is input.SOLUTION: A numerical expression display device 1 comprises: an input unit 22 for inputting a substitution expression for substituting a numerical value for a variable in response to a user operation and a variable containing numerical expression containing variables; a display unit 21 for displaying the numerical expressions input by the input unit 22; and a CPU 25 for performing numerical calculation for the input numerical expressions. The CPU 25 designates any numerical expression range in the input numerical expressions as a designated numerical expression range and detects a substitution expression for a variable included in the designated numerical expression range from the input numerical expressions to display it on the display unit 21.