| 摘要 |
PROBLEM TO BE SOLVED: To show an instructive effect by calculating plural inclinations between two front/rear points on a continuous function at a distance of a very small section from a designated point and the designated point, calculating through the use of each inclination so as to distinguish a singular point and a non- singular point from each other. SOLUTION: Through the use of an inclination calculating section setting value set in advance, inclination Y1' between two points of f(a-δ) (x=(a-δ)) and f(a) (x=a) and inclination Y2' between two points of f(a+δ) (x=(a+δ)) and f(a) (x=a) are calculated to discriminate whether the designated point f(a) (x=a) is a singular point in the functional formula based on y1' and Y2'. Then, when the designated point is a singular point, that the point is a singular point is displayed at the time of obtaining the inclination between the two points to allow a user to recognize. Relating to a scientific electronic calculator to which this is applied, for example, a CPU 11 controls the register of the functional formula, the calculating result of inclination, etc., and a display part 12 displays the functional formula, a calculating result, etc.
|
