Electronic device having graph display function in which user can set coefficient variation range for fine coefficient value adjustment, and graph display method, and storage medium storing graph display control process program having the same

摘要

A graph display control apparatus displays a first operation display element for varying, within a preset range, a value of a coefficient included in a function expression; displays a graph image corresponding to the function expression based on the value of the coefficient which is varied in accordance with a user operation of the first operation display element; designates, in accordance with a user operation, a partial variation range of the set variation range of the value of the coefficient; displays a second operation display element for varying the value of the coefficient within the designated partial variation range of the value of the coefficient; and re-displays the graph image displayed based on the value of the coefficient which is varied in accordance with a user operation of the second operation display element.