Patent ID: 8514227

Claim:
An electronic computer comprising: a display unit; a graph display control unit that performs display control of a graph corresponding to a function expression on the display unit; a position specify unit that specifies a plurality of point positions on the graph displayed on the display unit according to a user operation; a pointer display control unit that performs display control of a pointer for each of the plurality of point positions on the display unit specified by the position specify unit; a calculation result display control unit that does a specific calculation on the basis of positional information on a plurality of pointers displayed on the display unit and the function expression of the graph and performs display control of a result of calculation on the display unit; and a pointer movement control unit that performs movement display control on the graph of an arbitrary one of the plurality of pointers displayed on the display unit according to a user operation, wherein the calculation result display control unit performs the calculation again, updates the result of calculation, and performs display control of the updated result on the display unit each time the pointer movement control unit performs movement display control of a pointer; and a distance setting unit that sets a distance between the pointers, wherein the pointer movement control unit performs movement display control of the arbitrary pointer on the graph according to a user operation such that a distance from an adjacent pointer is kept at the distance set by the distance setting unit.