| 摘要 |
PROBLEM TO BE SOLVED: To reflect one of graphs on the other graph and to plot and display them when the plural graphs are crossed with each other, plotted and displayed in a graph display device. SOLUTION: For instance, when two graph expressions are inputted and the corresponding two graphs are plotted and displayed on a liquid crystal display part 13 in a crossed state by the operation of a 'graph' key 12c, a reflection setting screen G is displayed by operating a 'reflection' key 12e. When one graph number '1' to be a reflection object and the direction 'down' of incidence to be reflected to the other graph '2' are set, the intersection P of the two graphs is detected, and with the bisecting line O of the other graph '2' at the intersection P as a center, the incident graphΔy1a of the reflection object graph '1' made incident from the set incident direction 'down' is plotted and displayed as a line-symmetrically rotated and moved reflection graph y1'. |
