| 摘要 |
PURPOSE:To execute the definite integral operation with a small number of key operations and obtain an operation result with constant precision, by comparing the preceding integral operation result with the current integral operation result to draw an operation precision and by setting automatically a division number until it reaches a prescribed precision. CONSTITUTION:The write mode of a function to be integrated is set by MODE key 7a and entry keys of key input part 7, and function 1/(X+1) is written into RAM memory 9 by the key operation. Next, the mode is switched to the integration execution mode by MODE key 7a and entry keys; and when integral section data 0 and 2 are entered, 0 and 1 are written into the A register and the B register of RAM memory 9 respectively. When integration execution key EXE 7b is operated under this state, the division number is set automatically, and preceding and current integral operation results are compared with each other to draw the operation precision, and operations are performed successively until it reaches a prescribed precision. Consequently, the definite integral operation is made possible only by designating the integral range. |
